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Author Index, 1989, Volume 25
V. V. Solov'ëv
Solvability of an inverse problem of determining a source, with overdetermination on the upper cap, for a parabolic equation
Differ. Uravn., 1989, Volume 25:9, 1577–1583
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T. Sh. Abakirov
Inequalities between auxiliary and central exponents
Differ. Uravn., 1989, Volume 25:10, 1659–1662
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T. Sh. Abakirov
Auxiliary exponents
Differ. Uravn., 1989, Volume 25:3, 515–517
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M. A. Abdrachmanov
Estimates of the solution of a half-space initial-boundary value problem for a system of equations of elliptic-parabolic type in $W_p^l$-classes
Differ. Uravn., 1989, Volume 25:2, 330–331
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A. M. Abdrakhmanov
The Dirichlet problem for a multidimensional elliptic system with variable coefficients
Differ. Uravn., 1989, Volume 25:3, 517–520
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L. Sh. Abdulkerimov
Determination of the right-hand side of an abstract parabolic equation with additional conditions
Differ. Uravn., 1989, Volume 25:7, 1266–1267
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A. R. Abdullaev
Solvability of boundary value problems for functional-differential equations with Lipschitz nonlinearities
Differ. Uravn., 1989, Volume 25:11, 1843–1848
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A. R. Abdullaev, A. B. Burmistrova
On the solvability of boundary value problems in the resonance case
Differ. Uravn., 1989, Volume 25:12, 2044–2048
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A. Abdushukurov
An integral representation of solutions of the Moisil–Teodorescu system with singularities in the small terms
Differ. Uravn., 1989, Volume 25:8, 1436–1439
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M. M. Ad'yutov, Yu. A. Klokov
An initial value problem for second-order ordinary differential equations with singularities
Differ. Uravn., 1989, Volume 25:7, 1268–1270
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A. Yu. Aleksandrov
On the existence of recurrent solutions of a class of differential equations
Differ. Uravn., 1989, Volume 25:5, 902–903
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B. I. Aleroev, see T. S. Aleroev
Differ. Uravn., 1989, Volume 25:11, 1996–1997
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T. S. Aleroev, B. I. Aleroev
Eigenfunctions and eigenvalues of a nonselfadjoint operator
Differ. Uravn., 1989, Volume 25:11, 1996–1997
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M. I. Aliev
The third boundary value problem for degenerate linear elliptic equations
Differ. Uravn., 1989, Volume 25:2, 259–262
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R. M. Aliev
Optimal quadrature formulas on the solution sets of boundary value problems
Differ. Uravn., 1989, Volume 25:7, 1161–1171
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Sh. A. Alimov, T. Sh. Shirinkulov
Solution of contact problems in creep theory
Differ. Uravn., 1989, Volume 25:9, 1584–1588
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Z. S. Aliyev, see A. P. Makhmudov
Differ. Uravn., 1989, Volume 25:1, 89–96
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Zh. P. Allanazarov, see V. G. Prikazchikov
Differ. Uravn., 1989, Volume 25:7, 1250–1255
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T. G. Amangil'din
The regularized trace of the Sturm–Liouville operator
Differ. Uravn., 1989, Volume 25:8, 1439–1441
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I. M. Anan'evskii, V. B. Kolmanovskii
Stability of some control systems with aftereffect
Differ. Uravn., 1989, Volume 25:11, 1848–1852
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O. V. Anashkin, M. M. Khapaev
The comparison method and investigation of the stability of systems of ordinary differential equations containing perturbations. II
Differ. Uravn., 1989, Volume 25:2, 187–192
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A. B. Antonevich, Dang Khanh Hoi
Periodic solutions of some inhomogeneous evolution differential equations on Riemannian manifolds
Differ. Uravn., 1989, Volume 25:10, 1731–1736
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A. B. Antonevich, I. Khodzhai
A class of integro-difference equations with oscillating coefficients
Differ. Uravn., 1989, Volume 25:11, 1997–1999
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A. A. Arsen'ev, A. V. Bitsadze, A. A. Dorodnitsyn, S. V. Emel'yanov, N. P. Erugin, V. A. Il'in, S. P. Kurdyumov, A. N. Tikhonov
Aleksandr Andreevich Samarskiǐ (on the occasion of his seventieth birthday)
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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A. V. Arutyunov, M. D. Mardanov
On the theory of the maximum principle in problems with delays
Differ. Uravn., 1989, Volume 25:12, 2048–2058
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R. R. Ashurov
An asymptotic estimate in $L_2$ for the Riesz means of the spectral function of an elliptic operator
Differ. Uravn., 1989, Volume 25:1, 3–14
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S. N. Askhabov, N. K. Karapetyants
Discrete equations of convolution type with monotone nonlinearity
Differ. Uravn., 1989, Volume 25:10, 1777–1784
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E. A. Baderko
Solution of a problem with an oblique derivative for a parabolic equation by the method of boundary integral equations
Differ. Uravn., 1989, Volume 25:1, 14–20
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V. F. Badjukov
Uniqueness of a solution of boundary value problems of scattering with complex periodic potentials
Differ. Uravn., 1989, Volume 25:10, 1736–1746
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Л. А. Bakaleynikov, Yu. A. Polovko
Asymptotic behavior of nearly discontinuous solutions of singularly perturbed autonomous systems of ordinary differential equations in a neighborhood of a bifurcation point
Differ. Uravn., 1989, Volume 25:5, 903–906
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V. E. Balabaev
A three-dimensional analogue of the Cauchy–Riemann system for analytic functions of two complex variables
Differ. Uravn., 1989, Volume 25:5, 823–833
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E. A. Barabanov
Necessary conditions for the simultaneous behavior of higher sigma-exponents of a triangular system and systems of its diagonal approximation
Differ. Uravn., 1989, Volume 25:10, 1662–1670
|
N. E. Barabanov
Criteria for the asymptotic stability of systems of differential equations with periodic coefficients
Differ. Uravn., 1989, Volume 25:12, 2059–2066
|
N. E. Barabanov
New frequency criteria for the absolute stability and instability of automatic control systems with nonstationary nonlinearity
Differ. Uravn., 1989, Volume 25:4, 555–563
|
N. E. Barabanov
Criteria for the global asymptotics of stationary sets of systems of differential equations with a hysteresis nonlinearity
Differ. Uravn., 1989, Volume 25:5, 739–748
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O. O. Barabanov
Averaging of elastoplastic media in the case of bulk loads
Differ. Uravn., 1989, Volume 25:6, 1043–1045
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E. E. Barbashina
Necessary conditions of Copa–Moir type for a Goursat–Darboux system
Differ. Uravn., 1989, Volume 25:6, 1045–1047
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V. V. Basov
Divergence of normalizing transformations in the case of real structurally unstable focus
Differ. Uravn., 1989, Volume 25:4, 563–573
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Z. S. Batalova, N. A. Ezhevskaya
The structure of the phase space of the Duffing equation
Differ. Uravn., 1989, Volume 25:7, 1270–1271
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A. B. Bazarbekov
Smoothness of the solution of the Tricomi problem for equations of mixed type
Differ. Uravn., 1989, Volume 25:5, 816–822
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A. B. Bazarbekov
Boundary value problems for the two-dimensional wave equation in a characteristic cone
Differ. Uravn., 1989, Volume 25:9, 1551–1556
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D. Bazarov
An analogue of the Bitsadze–Samarskiǐ problem for a third-order parabolic-hyperbolic equation
Differ. Uravn., 1989, Volume 25:1, 21–27
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È. N. Bereslavskii
Integration in closed form of a class of Fuchsian equations and its applications
Differ. Uravn., 1989, Volume 25:6, 1048–1050
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G. K. Berikelashvili, see V. G. Prikazchikov
Differ. Uravn., 1989, Volume 25:9, 1622–1624
|
L. M. Berkovich
Second-order kindred linear differential equations
Differ. Uravn., 1989, Volume 25:2, 192–201
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S. A. Bespalova, Yu. A. Klokov
A boundary value problem for fourth-order ordinary differential equations
Differ. Uravn., 1989, Volume 25:4, 573–578
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S. A. Bespalova, Yu. A. Klokov
A boundary value operator with a condition at infinity for third-order equations
Differ. Uravn., 1989, Volume 25:8, 1441–1443
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B. T. Bilalov
The basis property of some systems of functions
Differ. Uravn., 1989, Volume 25:1, 163–164
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A. V. Bitsadze, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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V. V. Bobkov, P. A. Mandrik
A class of numerical methods for solving stiff systems
Differ. Uravn., 1989, Volume 25:7, 1171–1176
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S. A. Bogatyi, V. I. Guţu
On the structure of attracting compacta
Differ. Uravn., 1989, Volume 25:5, 907–909
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E. P. Bogomolova
Necessary conditions for the basis property in the direct sum of Sobolev spaces
Differ. Uravn., 1989, Volume 25:4, 722–723
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V. A. Boichenko, G. A. Leonov
The Hausdorff dimension of attractors of the Lorenz system
Differ. Uravn., 1989, Volume 25:11, 1999–2000
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K. Kh. Boimatov, P. I. Lizorkin
Estimates for the growth of solutions of differential equations
Differ. Uravn., 1989, Volume 25:4, 578–588
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S. D. Borisenko
Integro-summary inequalities for functions of several independent variables
Differ. Uravn., 1989, Volume 25:9, 1638–1641
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N. D. Botkin
Optimal universal strategy in a linear differential game
Differ. Uravn., 1989, Volume 25:9, 1475–1480
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S. A. Brykalov
A nonlinear boundary value problem with break points of solutions
Differ. Uravn., 1989, Volume 25:12, 2066–2075
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S. A. Brykalov
Conditions for the existence of solutions that do not require isolation of the linear part in the boundary conditions
Differ. Uravn., 1989, Volume 25:5, 749–757
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B. A. Bubnov
Necessary and sufficient conditions for the solvability of the Cauchy problem for some classes of nonlinear evolution equations
Differ. Uravn., 1989, Volume 25:1, 27–33
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V. Yu. Buchnev, see V. F. Butuzov
Differ. Uravn., 1989, Volume 25:12, 2128–2133
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V. Yu. Buchnev, see V. F. Butuzov
Differ. Uravn., 1989, Volume 25:3, 453–461
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T. V. Buchukuri, T. G. Gegelia
Boundary value problems in elasticity theory with concentrated singularities
Differ. Uravn., 1989, Volume 25:10, 1746–1755
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T. V. Buchukuri, G. T. Gegelia
Uniqueness of solutions of fundamental problems in elasticity theory for infinite domains
Differ. Uravn., 1989, Volume 25:9, 1556–1565
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T. S. Bud'ko, A. I. Yablonskii
A general method for searching for solutions with infinite limit values of components in autonomous differential systems with rational right-hand sides
Differ. Uravn., 1989, Volume 25:11, 1852–1856
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A. T. Bulabaev, M. Otelbaev, L. A. Shuster
Properties of Green's function of the Sturm–Liouville operator and their applications
Differ. Uravn., 1989, Volume 25:7, 1107–1114
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Bularas Driss, N. I. Vulpe, K. S. Sibirskii
Solution of a problem of the center “in the large” for a general quadratic differential system
Differ. Uravn., 1989, Volume 25:11, 1856–1862
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P. Burgmeier
Controllability of systems with distributed parameters that can be described by $m$th-order Goursat–Darboux systems
Differ. Uravn., 1989, Volume 25:11, 1947–1956
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A. B. Burmistrova, see A. R. Abdullaev
Differ. Uravn., 1989, Volume 25:12, 2044–2048
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V. F. Butuzov, V. Yu. Buchnev
Asymptotic approximation of the solution of a singularly perturbed parabolic two-dimensional problem with a nonsmooth limit solution
Differ. Uravn., 1989, Volume 25:12, 2128–2133
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V. F. Butuzov, V. Yu. Buchnev
On the asymptotic behavior of the solution of a singularly perturbed parabolic problem in the two-dimensional case
Differ. Uravn., 1989, Volume 25:3, 453–461
|
S. Bzhyhchy
An estimate for the rate of convergence of successive Chaplygin approximations for a parabolic system of functional-differential equations
Differ. Uravn., 1989, Volume 25:6, 1050–1052
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S. Bzhyhchy
On an estimate for the modulus of the solution of a nonlinear system of functional-differential equations of parabolic type
Differ. Uravn., 1989, Volume 25:8, 1444–1446
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D. N. Cheban
Nonautonomous dynamical systems with convergence
Differ. Uravn., 1989, Volume 25:9, 1633–1635
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T. V. Chekmarev
A nonlocal problem for an analytic function in a doubly connected domain
Differ. Uravn., 1989, Volume 25:2, 348–350
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A. G. Chentsov, see V. E. Pak
Differ. Uravn., 1989, Volume 25:11, 2004–2005
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N. A. Chernyavskaya, L. A. Shuster
The WKB method
Differ. Uravn., 1989, Volume 25:10, 1826–1829
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K. I. Chernyshov, see V. A. Sobolev
Differ. Uravn., 1989, Volume 25:2, 247–258
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Yu. I. Cherskii
A multidimensional dual equation of convolution type and its transposition
Differ. Uravn., 1989, Volume 25:5, 897–901
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Kh. A. Chikhanov
Hypergeometric series and Fuchsian systems
Differ. Uravn., 1989, Volume 25:10, 1727–1730
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A. Yu. Chinilov
Solution of the wave equation with an oblique derivative on the boundary
Differ. Uravn., 1989, Volume 25:9, 1635–1637
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Dang Khanh Hoi, see A. B. Antonevich
Differ. Uravn., 1989, Volume 25:10, 1731–1736
|
V. N. Denisov
Stabilization of means of the solution of the Cauchy problem for hyperbolic equations in a space of negative curvature
Differ. Uravn., 1989, Volume 25:1, 34–43
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A. I. Domoshnitskii, see S. A. Gusarenko
Differ. Uravn., 1989, Volume 25:12, 2090–2103
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A. I. Domoshnitskii, M. V. Sheina
Nonnegativity of the Cauchy matrix and the stability of a system of linear differential equations with retarded argument
Differ. Uravn., 1989, Volume 25:2, 201–208
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A. I. Domoshnitskii
Preserving the sign of the Green function of a two-point boundary value problem for an $n$th-order functional-differential equation
Differ. Uravn., 1989, Volume 25:6, 934–937
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A. A. Dorodnitsyn, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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D. M. Dovletov
A nonlocal boundary value problem of the first kind in a differential and a difference treatment
Differ. Uravn., 1989, Volume 25:8, 1297–1307
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N. G. Drik
Asymptotic behavior of solutions of a nonlinear second-order differential equation in a special case
Differ. Uravn., 1989, Volume 25:6, 1071–1072
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Yu. N. Drozhzhinov, see A. K. Gushchin
Differ. Uravn., 1989, Volume 25:8, 1465
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V. V. Dubrovskii, see V. A. Sadovnichy
Differ. Uravn., 1989, Volume 25:8, 1340–1344
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M. T. Dzhenaliev (Jenaliyev)
Optimal control of linear loaded parabolic equations
Differ. Uravn., 1989, Volume 25:4, 641–651
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O. M. Dzhokhadze
Some variants of the Frankl' problem for the Lavrent'ev–Bitsadze equation in a half-plane
Differ. Uravn., 1989, Volume 25:9, 1614–1618
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D. T. Dzhuraev, see A. S. Sopuev
Differ. Uravn., 1989, Volume 25:6, 1009–1015
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S. V. Emel'yanov, S. K. Korovin, I. G. Mamedov, A. L. Nersisyan
Binary algorithms for controlling a class of indeterminate dynamical systems with delay
Differ. Uravn., 1989, Volume 25:10, 1670–1679
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S. V. Emel'yanov, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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N. P. Erugin, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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N. P. Erugin
Mary Lucy Cartwright
Differ. Uravn., 1989, Volume 25:9, 1642–1646
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N. A. Ezhevskaya, see Z. S. Batalova
Differ. Uravn., 1989, Volume 25:7, 1270–1271
|
N. S. Fal'ko
Application of the method of Lyapunov functions in the problem of Poisson stability
Differ. Uravn., 1989, Volume 25:3, 446–452
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N. S. Fal'ko
Uniformly structurally stable sequences of Hill equations with periodic coefficients
Differ. Uravn., 1989, Volume 25:9, 1532–1540
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M. V. Fedoryuk
Diffraction of waves by a tri-axial ellipsoid
Differ. Uravn., 1989, Volume 25:11, 1990–1995
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M. V. Fedoryuk
Connection formulas for spheroidal functions in different coordinate systems
Differ. Uravn., 1989, Volume 25:2, 294–299
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E. V. Ferapontov
Reciprocal transformations and their invariants
Differ. Uravn., 1989, Volume 25:7, 1256–1265
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O. P. Filatov
On the existence of an averaged differential inclusion
Differ. Uravn., 1989, Volume 25:12, 2118–2127
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Ya. Fodor
Asymptotic behavior of solutions of linear systems with small perturbations
Differ. Uravn., 1989, Volume 25:10, 1824–1826
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V. I. Fomin
A singular differential equation with a small parameter in the case of a variable bounded operator coefficient
Differ. Uravn., 1989, Volume 25:8, 1350–1354
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V. I. Fomin
Small perturbations of a singular differential equation with a constant unbounded operator coefficient
Differ. Uravn., 1989, Volume 25:9, 1629–1630
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A. Collar
On the problem of the motion of an ideal fluid in an unbounded elastic basin
Differ. Uravn., 1989, Volume 25:8, 1417–1426
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N. S. Gabbasov
A generalized collocation method for integral equations of the third kind
Differ. Uravn., 1989, Volume 25:9, 1612–1614
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S. I. Gaiduk, G. M. Zayats
On the uniqueness of the solution of a problem from the wave theory of mechanical shock
Differ. Uravn., 1989, Volume 25:5, 833–839
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T. M. Gareeva, see Yu. V. Pokorny
Differ. Uravn., 1989, Volume 25:8, 1321–1332
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V. A. Gasilov
An approach to the solution of systems of implicit difference equations of magnetohydrodynamics
Differ. Uravn., 1989, Volume 25:7, 1193–1200
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V. A. Gasilov, S. I. Tkachenko
An implicit difference scheme for problems in gas dynamics and magnetogasdynamics
Differ. Uravn., 1989, Volume 25:7, 1200–1208
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E. A. Gasymov
Application of an integral transformation to the solution of a mixed problem for a nonclassical equation
Differ. Uravn., 1989, Volume 25:5, 909–911
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M. G. Gasymov, G. Sh. Guseinov
Some uniqueness theorems in inverse problems of spectral analysis for Sturm–Liouville operators in the case of the Weyl limit circle
Differ. Uravn., 1989, Volume 25:4, 588–599
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T. B. Kasumov
Fractional powers of quasidifferential operators and theorems on the property of being a basis
Differ. Uravn., 1989, Volume 25:4, 729–731
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G. T. Gegelia, see T. V. Buchukuri
Differ. Uravn., 1989, Volume 25:9, 1556–1565
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T. G. Gegelia, see T. V. Buchukuri
Differ. Uravn., 1989, Volume 25:10, 1746–1755
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M. I. Gil'
Estimates for the solutions of systems of nonlinear diffusion equations
Differ. Uravn., 1989, Volume 25:12, 2082–2090
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M. I. Gil'
Estimates for solutions of quasilinear systems of parabolic type
Differ. Uravn., 1989, Volume 25:4, 723–726
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M. I. Gil'
The “freezing” method for nonlinear equations
Differ. Uravn., 1989, Volume 25:8, 1291–1297
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A. L. Gladkov
The Cauchy problem for some quasilinear parabolic equations that are not solvable with respect to the time derivative
Differ. Uravn., 1989, Volume 25:9, 1565–1572
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P. A. Golovach
A topological invariant in pursuit problems
Differ. Uravn., 1989, Volume 25:6, 923–929
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V. N. Gorbuzov, A. A. Krushelnitsky
On the number of polynomial solutions of various degrees of algebraic differential equations
Differ. Uravn., 1989, Volume 25:6, 1069–1071
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V. M. Govorov, È. K. Safiev
Membership in class $W_2^1$ of the classical solution of the Dirichlet problem for second-order elliptic systems
Differ. Uravn., 1989, Volume 25:1, 165–167
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È. I. Grudo
On the structure of the solutions of a periodic Pfaffian system with two purely imaginary roots in the characteristic equation
Differ. Uravn., 1989, Volume 25:11, 1867–1872
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È. I. Grudo
A formula for periodic solutions of a linear nonhomogeneous differential system with a Jordan cell
Differ. Uravn., 1989, Volume 25:3, 521–523
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È. I. Grudo
On the theory of a class of linear integro-differential equations
Differ. Uravn., 1989, Volume 25:5, 876–884
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V. I. Guliaev, A. L. Zubritskaya, V. L. Koshkin
Construction of sequences of multiple-period-increase bifurcations of solutions of nonlinear ordinary differential equations
Differ. Uravn., 1989, Volume 25:6, 929–933
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L. N. Gurvits
A simple proof of Goka's conjecture
Differ. Uravn., 1989, Volume 25:7, 1272
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S. A. Gusarenko, A. I. Domoshnitskii
Asymptotic and oscillation properties of first-order linear scalar functional-differential equations
Differ. Uravn., 1989, Volume 25:12, 2090–2103
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G. Sh. Guseinov, see M. G. Gasymov
Differ. Uravn., 1989, Volume 25:4, 588–599
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I. M. Guseinov, I. M. Nabiev
A class of inverse boundary value problems for Sturm–Liouville operators
Differ. Uravn., 1989, Volume 25:7, 1114–1120
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A. K. Gushchin, Yu. N. Drozhzhinov, V. M. Millionshchikov, V. P. Mikhailov
Поправки к статье H. И. Гаврилова: VII всесоюз. конф. «Качественная теория дифференциальных уравнений», 3–7 апр. 1980 г.
Differ. Uravn., 1989, Volume 25:8, 1465
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V. I. Guţu, see S. A. Bogatyi
Differ. Uravn., 1989, Volume 25:5, 907–909
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I. S. Han, see N. N. Petrov
Differ. Uravn., 1989, Volume 25:11, 1910–1915
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A. O. Ignatyev
Stability of almost periodic systems with respect to some of the variables
Differ. Uravn., 1989, Volume 25:8, 1446–1448
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V. A. Il'in, K. V. Mal'kov, E. I. Moiseev
The basis property of systems of root functions of nonselfadjoint operators, and integrability of nonlinear evolution systems that are associated with the Lax representation. I
Differ. Uravn., 1989, Volume 25:11, 1956–1970
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V. A. Il'in, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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V. A. Il'in, K. V. Mal'kov, E. I. Moiseev
The basis property of systems of root functions of nonselfadjoint operators, and integrability of nonlinear evolution equations that are associated with the Lax representation. II
Differ. Uravn., 1989, Volume 25:12, 2133–2143
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O. G. Illarionova
The central exponent of a linear system of differential equations
Differ. Uravn., 1989, Volume 25:4, 599–604
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M. Imanaliev, Yu. A. Ved'
A first-order partial differential equation with an integral coefficient
Differ. Uravn., 1989, Volume 25:3, 465–477
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G. G. Islamov
Some applications of the theory of an abstract functional-differential equation. I
Differ. Uravn., 1989, Volume 25:11, 1872–1881
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G. G. Islamov
Estimates for a minimal rank of finite-dimensional perturbations of Green operators
Differ. Uravn., 1989, Volume 25:9, 1496–1503
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M. A. Ivanov
Topological equivalence of quasihomogeneous systems of differential equations
Differ. Uravn., 1989, Volume 25:11, 2016–2017
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M. A. Ivanov
The behavior of solutions of a perturbed homogeneous system of second-order differential equations
Differ. Uravn., 1989, Volume 25:10, 1810–1812
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M. I. Izteleuov, Sh. S. Smagulov
An approximate method for solving a stationary conjugate problem of heat and mass transfer
Differ. Uravn., 1989, Volume 25:7, 1227–1232
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È. Kadelburg, M. Martinovič
The spectral function of a second-order functional-differential operator
Differ. Uravn., 1989, Volume 25:11, 1882–1888
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A. I. Kalinin
Asymptotic optimization of linear singularly perturbed control systems
Differ. Uravn., 1989, Volume 25:10, 1687–1698
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B. S. Kalitin
On a problem of Florio and Seibert
Differ. Uravn., 1989, Volume 25:4, 727–729
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L. I. Kamynin
Smoothness of parabolic Pagni potentials. I
Differ. Uravn., 1989, Volume 25:3, 477–490
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L. I. Kamynin
Smoothness of parabolic Pagni potentials. II. Proof of theorems on smoothness of direct values of Pagni potentials
Differ. Uravn., 1989, Volume 25:4, 659–674
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L. I. Kamynin
Smoothness of parabolic Pagni potentials. III. Proof of a theorem on the smoothness of a Pagni parabolic potential of a simple layer
Differ. Uravn., 1989, Volume 25:5, 843–860
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N. Yu. Kapustin
$L_2$-solvability of boundary value problems for equations of mixed type
Differ. Uravn., 1989, Volume 25:1, 50–59
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N. Yu. Kapustin
A new approach to studying boundary value problems with generalized $L_2$ solutions
Differ. Uravn., 1989, Volume 25:6, 975–982
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Yu. N. Karamzin, see I. G. Zakharova
Differ. Uravn., 1989, Volume 25:7, 1219–1227
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N. K. Karapetyants, see S. N. Askhabov
Differ. Uravn., 1989, Volume 25:10, 1777–1784
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G. D. Karatoprakliev
A nonlocal boundary value problem for hyperbolic-parabolic equations
Differ. Uravn., 1989, Volume 25:8, 1355–1359
|
V. R. Kardashov
Generalized eigenvalue problems and strongly nonlinear self-induced oscillations
Differ. Uravn., 1989, Volume 25:9, 1503–1508
|
H. M. Karov
An inequality of Hilbert type in a system of eigen- and associated functions of a second-order differential operator for odd and even functions
Differ. Uravn., 1989, Volume 25:8, 1307–1312
|
S. A. Kashchenko
Spatial singularities of high-mode bifurcations of two-component systems with small diffusion
Differ. Uravn., 1989, Volume 25:2, 262–270
|
S. A. Kashchenko
Application of the normalization method to the study of the dynamics of a differential-difference equation with a small factor multiplying the derivative
Differ. Uravn., 1989, Volume 25:8, 1448–1451
|
D. Khalmuratov, see M. Mamazhanov
Differ. Uravn., 1989, Volume 25:2, 271–275
|
M. M. Khapaev, see O. V. Anashkin
Differ. Uravn., 1989, Volume 25:2, 187–192
|
S. S. Kharibegashvili
Solvability of a characteristic problem for second-order degenerate hyperbolic systems
Differ. Uravn., 1989, Volume 25:1, 154–162
|
A. M. Khludnev
Limit transitions in optimal control problems for a fourth-order operator
Differ. Uravn., 1989, Volume 25:8, 1427–1435
|
I. Khodzhai, see A. B. Antonevich
Differ. Uravn., 1989, Volume 25:11, 1997–1999
|
O. V. Khramtsov
Controllability of linear Cauchy–Kovalevskaya systems with constant coefficients
Differ. Uravn., 1989, Volume 25:11, 2013–2014
|
A. Yu. Khrennikov
Pseudodifferential equations in functional superanalysis. II. The Feynman–Kac formula
Differ. Uravn., 1989, Volume 25:3, 505–514
|
D. Ya. Khusainov
Exponential stability of linear systems with delay
Differ. Uravn., 1989, Volume 25:2, 357–359
|
D. Ya. Khusainov
An exponential estimate for solutions of linear systems with delay with arbitrary deviation of the argument
Differ. Uravn., 1989, Volume 25:9, 1631–1633
|
R. Sh. Khusnutdinov
Solutions of a class of nonlinear singular integro-differential equations with a shift
Differ. Uravn., 1989, Volume 25:2, 311–320
|
V. Ph. Kirichenko, see L. A. Zhelezovskaya
Differ. Uravn., 1989, Volume 25:3, 523–525
|
V. Ph. Kirichenko, see S. E. Zhelezovsky
Differ. Uravn., 1989, Volume 25:4, 652–659
|
V. Ph. Kirichenko, see S. E. Zhelezovsky
Differ. Uravn., 1989, Volume 25:7, 1208–1219
|
K. Yu. Kishkis
On the theory of nonlocal problems for the Laplace equation
Differ. Uravn., 1989, Volume 25:1, 59–64
|
K. Yu. Kishkis
Letter to the editors: “The index of the Bitsadze–Samarskiǐ problem for harmonic functions” [Differentsial'nye Uravneniya 24 (1988), no. 1, 105–110; MR0930160]
Differ. Uravn., 1989, Volume 25:3, 546
|
M. V. Klibanov
Uniqueness of the determination of the distortions of a crystalline lattice by the x-ray diffraction method in a continuous dynamical model
Differ. Uravn., 1989, Volume 25:5, 757–765
|
Yu. A. Klokov, see S. A. Bespalova
Differ. Uravn., 1989, Volume 25:4, 573–578
|
Yu. A. Klokov, see M. M. Ad'yutov
Differ. Uravn., 1989, Volume 25:7, 1268–1270
|
Yu. A. Klokov, see S. A. Bespalova
Differ. Uravn., 1989, Volume 25:8, 1441–1443
|
L. B. Knyazhishche, N. A. Raptunovich
Partial localization of limit sets and the asymptotic stability of nonautonomous equations. I
Differ. Uravn., 1989, Volume 25:3, 388–400
|
L. B. Knyazhishche, N. A. Raptunovich
Partial localization of limit sets and the asymptotic stability of nonautonomous equations. II
Differ. Uravn., 1989, Volume 25:5, 765–774
|
A. N. Kochubei
The Cauchy problem for evolution equations of fractional order
Differ. Uravn., 1989, Volume 25:8, 1359–1368
|
A. Yu. Kolesov, E. F. Mishchenko
A problem of Pontryagin
Differ. Uravn., 1989, Volume 25:11, 1888–1891
|
V. B. Kolmanovskii, see I. M. Anan'evskii
Differ. Uravn., 1989, Volume 25:11, 1848–1852
|
V. L. Kolyadin, V. F. Kravchenko
Optimal solution of operator equations when the initial data are of finite dimension
Differ. Uravn., 1989, Volume 25:11, 1891–1897
|
A. I. Kondrat'eva, see N. I. Kozlov
Differ. Uravn., 1989, Volume 25:7, 1233–1240
|
T. B. Kopeikina
Controllability of linear singularly perturbed systems with delay
Differ. Uravn., 1989, Volume 25:9, 1508–1518
|
R. G. Koplatadze
Differential equations with deviating argument that have the properties $A$ and $B$
Differ. Uravn., 1989, Volume 25:11, 1897–1909
|
V. V. Kornienko
Smoothness of solutions of irregular equations
Differ. Uravn., 1989, Volume 25:9, 1572–1577
|
A. I. Korotkii
On the extension of extremal problems that are connected with controllable elliptic systems
Differ. Uravn., 1989, Volume 25:9, 1518–1522
|
S. K. Korovin, see S. V. Emel'yanov
Differ. Uravn., 1989, Volume 25:10, 1670–1679
|
A. F. Korzyuk, see A. I. Yablonskii
Differ. Uravn., 1989, Volume 25:4, 635–640
|
V. F. Koshchy, A. I. Ropavka
Dual methods for solving boundary value problems for systems of elliptic equations
Differ. Uravn., 1989, Volume 25:5, 861–867
|
V. L. Koshkin, see V. I. Guliaev
Differ. Uravn., 1989, Volume 25:6, 929–933
|
D. P. Kostomarov, see L. M. Kovrizhnykh
Differ. Uravn., 1989, Volume 25:6, 983–989
|
L. M. Kovrizhnykh, D. P. Kostomarov, D. Yu. Sychugov, S. V. Shchepetov
Properties of the structures of magnetic surfaces in plasma
Differ. Uravn., 1989, Volume 25:6, 983–989
|
A. I. Kozhanov
Boundary value problems and properties of solutions for third-order equations
Differ. Uravn., 1989, Volume 25:12, 2143–2153
|
Yu. V. Kozitskii, N. O. Mel'nik
Eigenfunctions of infinite-order differential operators in a class of entire functions
Differ. Uravn., 1989, Volume 25:7, 1273–1275
|
N. I. Kozlov, A. I. Kondrat'eva, I. G. Krutikova, V. I. Pan'kov, S. V. Rusetskii
Numerical solution of a system of partial differential equations with a small parameter multiplying the derivative
Differ. Uravn., 1989, Volume 25:7, 1233–1240
|
Yu. P. Krasovskii
Nonlinear diffusion and the stratification process
Differ. Uravn., 1989, Volume 25:6, 989–993
|
V. F. Kravchenko, see V. L. Kolyadin
Differ. Uravn., 1989, Volume 25:11, 1891–1897
|
G. S. Krechetov
Asymptotic properties of the solutions of differential equations with unbounded damping
Differ. Uravn., 1989, Volume 25:3, 525–527
|
G. S. Krechetov
Lower and upper bounds for solutions of some classes of first-order differential equations
Differ. Uravn., 1989, Volume 25:9, 1523–1526
|
D. I. Kristev
On the behavior of solutions of some semilinear elliptic and parabolic inequalities
Differ. Uravn., 1989, Volume 25:8, 1368–1374
|
L. V. Kritskov
A uniform estimate for the order of associated functions, and the distribution of eigenvalues of a one-dimensional Schrödinger operator
Differ. Uravn., 1989, Volume 25:7, 1121–1129
|
A. A. Krushelnitsky, see V. N. Gorbuzov
Differ. Uravn., 1989, Volume 25:6, 1069–1071
|
I. G. Krutikova, see N. I. Kozlov
Differ. Uravn., 1989, Volume 25:7, 1233–1240
|
V. A. Krys'ko, see L. A. Zhelezovskaya
Differ. Uravn., 1989, Volume 25:3, 523–525
|
V. A. Krys'ko, see S. E. Zhelezovsky
Differ. Uravn., 1989, Volume 25:4, 652–659
|
V. A. Krys'ko, see S. E. Zhelezovsky
Differ. Uravn., 1989, Volume 25:7, 1208–1219
|
G. A. Krystev, see H. B. Pophristov
Differ. Uravn., 1989, Volume 25:6, 1065
|
E. P. Kubishkin
Self-oscillatory solutions of a class of singularly perturbed boundary value problems
Differ. Uravn., 1989, Volume 25:4, 674–685
|
B. P. Kufarev, N. G. Nikulina, B. V. Sokolov
$K$-limits of solutions of second-order quasilinear elliptic equations
Differ. Uravn., 1989, Volume 25:4, 686–692
|
S. P. Kurdyumov, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
|
R. P. Kuzmina
On the solution of singularly perturbed equations on a large interval of the independent variable
Differ. Uravn., 1989, Volume 25:3, 527–529
|
S. K. Kydyraliev
Increasing the smoothness of solutions of second-order degenerate elliptic equations
Differ. Uravn., 1989, Volume 25:3, 529–531
|
M. Kh. Lantsman
Asymptotic similarity of sets and polynomials
Differ. Uravn., 1989, Volume 25:6, 1052–1053
|
M. I. Lapachugina, G. A. Leonov
A frequency criterion for instability in the large of nonlinear dynamical systems
Differ. Uravn., 1989, Volume 25:8, 1451–1453
|
E. A. Larionov
Properties of root functions of some differential operators
Differ. Uravn., 1989, Volume 25:10, 1812–1815
|
S. P. Lavrenyuk
A mixed problem for a degenerate equation of plate oscillation type
Differ. Uravn., 1989, Volume 25:8, 1375–1383
|
K. P. Lazarev, see Yu. V. Pokorny
Differ. Uravn., 1989, Volume 25:8, 1321–1332
|
G. A. Leonov, see V. A. Boichenko
Differ. Uravn., 1989, Volume 25:11, 1999–2000
|
G. A. Leonov
Asymptotic behavior of the solutions of the Lorenz system
Differ. Uravn., 1989, Volume 25:12, 2103–2109
|
G. A. Leonov, see M. I. Lapachugina
Differ. Uravn., 1989, Volume 25:8, 1451–1453
|
A. Ya. Lepin
A priori boundedness of derivatives for a system of differential inequalities
Differ. Uravn., 1989, Volume 25:7, 1129–1135
|
M. E. Lerner
Solvability of a boundary value problem for hyperbolic equations in nonclassical domains
Differ. Uravn., 1989, Volume 25:4, 704–716
|
A. A. Levakov
Stability of functional-differential inclusions
Differ. Uravn., 1989, Volume 25:8, 1312–1321
|
A. V. Lezhnev
Estimates for the Green function and for solutions of the second mixed problem for a parabolic equation
Differ. Uravn., 1989, Volume 25:4, 692–703
|
A. V. Lezhnev
Lower bounds on the Green function of the second mixed problem for a second-order parabolic equation
Differ. Uravn., 1989, Volume 25:8, 1383–1393
|
I. K. Lifanov, L. N. Poltavskii
The generalized Hilbert operator
Differ. Uravn., 1989, Volume 25:2, 300–306
|
O. A. Liskovets
Regularization of variational inequalities with pseudomonotone operators on approximately defined domains
Differ. Uravn., 1989, Volume 25:11, 1970–1977
|
I. S. Litvinchev
Decomposition in dynamic problems with mixed constraints
Differ. Uravn., 1989, Volume 25:8, 1453–1457
|
P. I. Lizorkin, see K. Kh. Boimatov
Differ. Uravn., 1989, Volume 25:4, 578–588
|
I. S. Lomov
The basis property of root functions of operators with multipoint boundary conditions
Differ. Uravn., 1989, Volume 25:6, 1053–1056
|
N. A. Lukashevich, V. N. Orlov
Investigation of an approximate solution of the second Painlevé equation
Differ. Uravn., 1989, Volume 25:10, 1829–1832
|
V. A. Lunkevich, K. S. Sibirskii
Quadratic zero-systems of differential equations
Differ. Uravn., 1989, Volume 25:6, 1056–1058
|
E. K. Makarov
Linear systems with nonregularity sets of full measure
Differ. Uravn., 1989, Volume 25:2, 209–212
|
S. V. Makarov, see V. L. Makarov
Differ. Uravn., 1989, Volume 25:7, 1240–1249
|
V. L. Makarov, S. V. Makarov
Accuracy of a difference scheme for quasilinear elliptic equations in a rhombus with solutions in the class $W_2^k(\Omega)$, $1<k\le4$
Differ. Uravn., 1989, Volume 25:7, 1240–1249
|
A. P. Makhmudov, Z. S. Aliyev
Global bifurcation of solutions of some nonlinearizable eigenvalue problems
Differ. Uravn., 1989, Volume 25:1, 89–96
|
A. S. Makin
Summability of spectral expansions that correspond to the nonselfadjoint Schrödinger operator. I
Differ. Uravn., 1989, Volume 25:1, 65–73
|
F. G. Maksudov, O. A. Veliev
Spectral analysis of differential operators with periodic matrix coefficients
Differ. Uravn., 1989, Volume 25:3, 400–409
|
R. P. Malayshka
Symmetries of the Birkhoff equations, and conservation laws
Differ. Uravn., 1989, Volume 25:7, 1275–1277
|
K. V. Mal'kov, see V. A. Il'in
Differ. Uravn., 1989, Volume 25:11, 1956–1970
|
K. V. Mal'kov, see V. A. Il'in
Differ. Uravn., 1989, Volume 25:12, 2133–2143
|
K. V. Mal'kov
On the construction of stable and stabilizing systems with distributed parameters
Differ. Uravn., 1989, Volume 25:1, 74–89
|
V. A. Malovichko
Boundary value problems for degenerate and nondegenerate hyperbolic systems
Differ. Uravn., 1989, Volume 25:11, 1977–1981
|
V. A. Malovichko
A boundary value problem for a system of third-order equations of composite type
Differ. Uravn., 1989, Volume 25:3, 531–533
|
Yu. V. Malyshev, V. P. Zakharov
Investigation of the existence and convexity of limit cycles by the method of generalized Lyapunov functions
Differ. Uravn., 1989, Volume 25:2, 212–216
|
M. Mamazhanov, D. Khalmuratov
Boundary value problems for third-order parabolic-hyperbolic equations with a noncharacteristic line of change of type
Differ. Uravn., 1989, Volume 25:2, 271–275
|
A. D. Mamedov
A problem of optimal variable control for the heat conduction process
Differ. Uravn., 1989, Volume 25:6, 994–1000
|
I. G. Mamedov, see S. V. Emel'yanov
Differ. Uravn., 1989, Volume 25:10, 1670–1679
|
Ya. N. Mamedov
On the completeness of root functions of some boundary value problems
Differ. Uravn., 1989, Volume 25:1, 167–169
|
Yu. A. Mamedov
Expansions in residues of the solution of a spectral problem for a system of ordinary differential equations
Differ. Uravn., 1989, Volume 25:3, 409–423
|
P. A. Mandrik, see V. V. Bobkov
Differ. Uravn., 1989, Volume 25:7, 1171–1176
|
K. B. Mansimov
Optimality of singular controls in systems with delay that are controllable by means of initial functions
Differ. Uravn., 1989, Volume 25:6, 1081–1084
|
M. J. Mardanov, see A. V. Arutyunov
Differ. Uravn., 1989, Volume 25:12, 2048–2058
|
M. I. Markechko
Asymptotic stability of singularly perturbed differential equations
Differ. Uravn., 1989, Volume 25:10, 1698–1705
|
M. Martinovič, see È. Kadelburg
Differ. Uravn., 1989, Volume 25:11, 1882–1888
|
V. I. Mazhukin, see V. F. Vasilevskii
Differ. Uravn., 1989, Volume 25:7, 1188–1193
|
V. S. Medvedev
On the bifurcation of the separatrix connecting two equilibrium states
Differ. Uravn., 1989, Volume 25:2, 332–335
|
N. B. Medvedeva
The problem of the stability of singular points on the plane from the point of view of algebraic and analytic solvability
Differ. Uravn., 1989, Volume 25:4, 605–610
|
I. N. Meleshko
On an approximate solution of a singular integro-differential equation
Differ. Uravn., 1989, Volume 25:5, 888–897
|
N. O. Mel'nik, see Yu. V. Kozitskii
Differ. Uravn., 1989, Volume 25:7, 1273–1275
|
V. P. Mikhailov, see A. K. Gushchin
Differ. Uravn., 1989, Volume 25:8, 1465
|
V. M. Millionshchikov, see A. K. Gushchin
Differ. Uravn., 1989, Volume 25:8, 1465
|
R. M. Mints
Limit cycles of a quadratic system of differential equations in the presence of an integral line
Differ. Uravn., 1989, Volume 25:2, 351–352
|
S. A. Minyuk
On the theory of controllability of systems with aftereffect in functional spaces involving constraints on the control
Differ. Uravn., 1989, Volume 25:11, 2003–2004
|
V. I. Mironenko
Simple systems and periodic solutions of differential equations
Differ. Uravn., 1989, Volume 25:12, 2109–2114
|
V. M. Mirzoev
Solvability of the first mixed problem for a second-order parabolic equation with discontinuous coefficients
Differ. Uravn., 1989, Volume 25:11, 1981–1990
|
D. D. Mirzov
An analogue of a theorem of Hartman
Differ. Uravn., 1989, Volume 25:2, 216–222
|
E. F. Mishchenko, see A. Yu. Kolesov
Differ. Uravn., 1989, Volume 25:11, 1888–1891
|
V. V. Mityushev
Functional equations for analytic and harmonic functions
Differ. Uravn., 1989, Volume 25:10, 1816
|
E. I. Moiseev, see V. A. Il'in
Differ. Uravn., 1989, Volume 25:11, 1956–1970
|
E. I. Moiseev, see V. A. Il'in
Differ. Uravn., 1989, Volume 25:12, 2133–2143
|
E. I. Moiseev
Completeness of a system of root functions of the Tricomi problem for the Lavrent'ev–Bitsadze equation
Differ. Uravn., 1989, Volume 25:1, 170–172
|
E. I. Moiseev
Disposition of the spectrum of the Tricomi problem for the Lavrent'ev–Bitsadze equation
Differ. Uravn., 1989, Volume 25:1, 97–106
|
V. S. Mokeichev
Eigenvalues of boundary value problems. Transformations of boundary value problems to boundary value problems with small coefficients
Differ. Uravn., 1989, Volume 25:2, 222–228
|
B. Mordukhovich
Necessary conditions for optimality in nonsmooth control problems with nonfixed time
Differ. Uravn., 1989, Volume 25:3, 424–434
|
A. I. Moshinskii
Some expansions of arbitrary functions in integrals with respect to spherical functions
Differ. Uravn., 1989, Volume 25:4, 716–721
|
R. G. Mukharlyamov
Control of programmed motion with respect to some of the coordinates
Differ. Uravn., 1989, Volume 25:6, 938–942
|
F. G. Mukhlisov
On the existence and uniqueness of the solution of a singular problem in the mathematical theory of diffraction
Differ. Uravn., 1989, Volume 25:12, 2154–2164
|
A. N. Murovtsev
Analytic solutions of a system of nonlinear autonomous differential equations with deviating arguments
Differ. Uravn., 1989, Volume 25:10, 1817–1819
|
M. A. Mustafin
The Riesz basis of a system of sines
Differ. Uravn., 1989, Volume 25:10, 1832–1833
|
M. A. Mustafin
The Riesz basis of the Bitsadze–Samarskiǐ spectral problem with infinitely multiple eigenvalues
Differ. Uravn., 1989, Volume 25:1, 172–174
|
S. A. Myzgaeva, A. I. Yablonskii
Problems of the nonuniqueness of solutions of the system of Euler differential equations in nonintegrable cases
Differ. Uravn., 1989, Volume 25:7, 1277–1278
|
I. M. Nabiev, see I. M. Guseinov
Differ. Uravn., 1989, Volume 25:7, 1114–1120
|
V. A. Nadareishvili
Oscillation and nonoscillation of solutions of first-order linear differential equations with deviating argument
Differ. Uravn., 1989, Volume 25:4, 611–616
|
A. V. Nagornyi, see V. A. Sadovnichy
Differ. Uravn., 1989, Volume 25:8, 1340–1344
|
A. L. Nersisyan, see S. V. Emel'yanov
Differ. Uravn., 1989, Volume 25:10, 1670–1679
|
Nguen Van Mau
Solvability in closed form of a class of complete singular integral equations
Differ. Uravn., 1989, Volume 25:2, 307–311
|
P. V. Nikolenko
On the structure of the pre-image of zero of a nonnegative solution of a homogeneous equation with a biharmonic principal part
Differ. Uravn., 1989, Volume 25:6, 1058–1059
|
N. G. Nikulina, see B. P. Kufarev
Differ. Uravn., 1989, Volume 25:4, 686–692
|
L. I. Novakovskaya
The Cauchy problem for a singularly perturbed integro-differential equation with a nonstable spectrum
Differ. Uravn., 1989, Volume 25:9, 1606–1611
|
V. P. Nozdracheva
A priori estimation of the length of a closed trajectory on a plane
Differ. Uravn., 1989, Volume 25:2, 229–233
|
V. P. Nozdracheva
Existence of tangential $O$-curves of an algebroid system of differential equations in some degenerate cases
Differ. Uravn., 1989, Volume 25:6, 1059–1062
|
A. M. Nurmatov
Necessary conditions for stability of characteristic Lyapunov exponents of linear differential systems in case of exponentially decreasing perturbations
Differ. Uravn., 1989, Volume 25:2, 335–336
|
G. R. Oganesyan
An initial-value problem for some singular hyperbolic equations and WKB-estimates for its solutions
Differ. Uravn., 1989, Volume 25:6, 1062–1064
|
L. K. Orlik
On the exponential characteristic of a Volterra integral operator with periodic kernel depending on four variables
Differ. Uravn., 1989, Volume 25:10, 1819–1821
|
V. N. Orlov, see N. A. Lukashevich
Differ. Uravn., 1989, Volume 25:10, 1829–1832
|
D. G. Orlovskii
An inverse problem for a second-order differential equation in a Banach space
Differ. Uravn., 1989, Volume 25:6, 1000–1009
|
G. S. Osipenko
Examples of perturbations of invariant manifolds
Differ. Uravn., 1989, Volume 25:6, 943–950
|
G. S. Osipenko
Application of theorems on the perturbation of invariant manifolds
Differ. Uravn., 1989, Volume 25:9, 1526–1532
|
A. V. Osipov, V. A. Pliss
Relaxation oscillations in a system of Duffing type
Differ. Uravn., 1989, Volume 25:3, 435–446
|
M. Otelbaev, see A. T. Bulabaev
Differ. Uravn., 1989, Volume 25:7, 1107–1114
|
A. B. Ovcharov
An analytic solution of a problem of optimizing an approach process
Differ. Uravn., 1989, Volume 25:7, 1136–1141
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D. A. Ovsyannikov, see S. A. Vavilov
Differ. Uravn., 1989, Volume 25:7, 1183–1187
|
D. V. Paatashvili
Unbounded solutions of second-order linear differential equations with retarded argument
Differ. Uravn., 1989, Volume 25:5, 774–780
|
V. E. Pak, A. G. Chentsov
Some topological properties of generalized solutions of nonlinear control systems
Differ. Uravn., 1989, Volume 25:11, 2004–2005
|
A. I. Panasyuk
Approximation subsystems of a dynamical system of shifts
Differ. Uravn., 1989, Volume 25:10, 1705–1715
|
N. G. Panfilov, V. I. Rozhkov
Asymptotics of solutions of boundary value problems for quasilinear singularly perturbed systems
Differ. Uravn., 1989, Volume 25:11, 2005–2008
|
V. I. Pan'kov, see N. I. Kozlov
Differ. Uravn., 1989, Volume 25:7, 1233–1240
|
G. N. Pazin
Isolation of a generalized solution of the Cauchy problem for a system of equations of gas dynamics without convexity conditions
Differ. Uravn., 1989, Volume 25:8, 1394–1400
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O. M. Penkin, see Yu. V. Pokorny
Differ. Uravn., 1989, Volume 25:7, 1141–1150
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R. I. Petrishin, see A. M. Samoilenko
Differ. Uravn., 1989, Volume 25:6, 956–964
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N. N. Petrov, I. S. Han
Limit sets for trajectories of dynamical polysystems
Differ. Uravn., 1989, Volume 25:11, 1910–1915
|
N. B. Pleshchinskii
On some classes of integral equations solvable in closed form
Differ. Uravn., 1989, Volume 25:3, 533–534
|
V. A. Pliss, see A. V. Osipov
Differ. Uravn., 1989, Volume 25:3, 435–446
|
Yu. V. Pokornyi, O. M. Penkin
Comparison theorems for equations on graphs
Differ. Uravn., 1989, Volume 25:7, 1141–1150
|
Yu. V. Pokornyi, K. P. Lazarev, T. M. Gareeva
Nonlocal boundary value problems for ordinary differential equations
Differ. Uravn., 1989, Volume 25:8, 1321–1332
|
Yu. A. Polovko, see Л. А. Bakaleynikov
Differ. Uravn., 1989, Volume 25:5, 903–906
|
L. N. Poltavskii, see I. K. Lifanov
Differ. Uravn., 1989, Volume 25:2, 300–306
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S. V. Polyakov, see I. G. Zakharova
Differ. Uravn., 1989, Volume 25:7, 1219–1227
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A. V. Ponosov
On the theory of reducible functional-differential Itô equations
Differ. Uravn., 1989, Volume 25:11, 1915–1925
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H. B. Pophristov, G. A. Krystev
A new case of integrability by quadratures of the general Riccati equation
Differ. Uravn., 1989, Volume 25:6, 1065
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V. G. Prikazchikov
Efficient improvement of the accuracy of calculating eigenvalues
Differ. Uravn., 1989, Volume 25:10, 1821–1823
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V. G. Prikazchikov, Zh. P. Allanazarov
A scheme of fourth-order accuracy in a spectral problem for an equation with a mixed derivative
Differ. Uravn., 1989, Volume 25:7, 1250–1255
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V. G. Prikazchikov, G. K. Berikelashvili
Schemes of increased accuracy for an elliptic equation with a mixed derivative
Differ. Uravn., 1989, Volume 25:9, 1622–1624
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A. I. Prilepko, I. A. Vasin
An inverse initial-boundary value problem for the nonlinear Navier–Stokes system in the case of final overdetermination
Differ. Uravn., 1989, Volume 25:12, 2164–2177
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A. I. Prilepko, I. A. Vasin
Some inverse initial-boundary value problems for nonstationary linearized Navier–Stokes equations
Differ. Uravn., 1989, Volume 25:1, 106–117
|
R. A. Prokhorova
Reduction of linear finite-difference equations to differential equations
Differ. Uravn., 1989, Volume 25:5, 780–785
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V. S. Pronkin
The disappearance of the reducibility property in systems with quasiperiodic coefficients
Differ. Uravn., 1989, Volume 25:6, 1073–1075
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V. A. Pron'ko
A class of third-order equations with an irrational right-hand side without moving critical points
Differ. Uravn., 1989, Volume 25:3, 535–537
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A. K. Pulatov
A Bitsadze-Samarskiǐ problem
Differ. Uravn., 1989, Volume 25:3, 537–540
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V. F. Pulyaev
Bounded and almost periodic solutions of linear integral equations. I
Differ. Uravn., 1989, Volume 25:10, 1787–1798
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N. Radjabov, A. B. Rasulov
Integral representations and boundary value problems for a class of systems of differential equations of elliptic type with singular manifolds
Differ. Uravn., 1989, Volume 25:7, 1279–1281
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M. I. Rakhimberdiev
On exponential dichotomy with maximal index and on uniform strong positivity of a family of automorphisms of a vector bundle
Differ. Uravn., 1989, Volume 25:2, 234–240
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A. T. Rakhmanov
A pursuit method in linear differential games with integral constraints on the controls
Differ. Uravn., 1989, Volume 25:5, 785–790
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V. A. Rantsevich, A. M. Samson
Limit cycles of a dynamical system that models the functioning of a laser
Differ. Uravn., 1989, Volume 25:3, 540–542
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N. A. Raptunovich, see L. B. Knyazhishche
Differ. Uravn., 1989, Volume 25:3, 388–400
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N. A. Raptunovich, see L. B. Knyazhishche
Differ. Uravn., 1989, Volume 25:5, 765–774
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G. A. Rasolko, see M. A. Sheshko
Differ. Uravn., 1989, Volume 25:5, 911–915
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V. A. Rastorguev
The regularized trace of an operator with a weak singularity
Differ. Uravn., 1989, Volume 25:6, 1075–1078
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A. B. Rasulov, see N. R. Radjabov
Differ. Uravn., 1989, Volume 25:7, 1279–1281
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A. M. Rodionov
Impulse control of systems with delay
Differ. Uravn., 1989, Volume 25:9, 1624–1626
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V. I. Rodionov
Analytic solution of a linear functional-differential equation with linear deviation of the argument
Differ. Uravn., 1989, Volume 25:4, 616–626
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A. E. Rodkina
Stochastic functional-differential equations with respect to a semimartingale
Differ. Uravn., 1989, Volume 25:10, 1716–1721
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V. G. Romanov
Local solvability of some multidimensional inverse problems for equations of hyperbolic type
Differ. Uravn., 1989, Volume 25:2, 275–283
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A. I. Ropavka, see V. F. Koshchy
Differ. Uravn., 1989, Volume 25:5, 861–867
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V. I. Rozhkov, see N. G. Panfilov
Differ. Uravn., 1989, Volume 25:11, 2005–2008
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T. P. Rudneva
An initial-boundary value problem for a degenerate parabolic equation with a variable time direction
Differ. Uravn., 1989, Volume 25:5, 867–875
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S. V. Rusetskii, see N. I. Kozlov
Differ. Uravn., 1989, Volume 25:7, 1233–1240
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A. G. Rutkas
Classification and properties of solutions of the equation $Ax'+Bx=f(t)$
Differ. Uravn., 1989, Volume 25:7, 1150–1155
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V. P. Ruzaev
On the bifurcation of an invariant torus $\mathbf T^m\to\mathbf T^{m+1}$
Differ. Uravn., 1989, Volume 25:6, 1066–1069
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I. P. Ryazantseva
A stable method for determining pseudo-solutions of nonlinear equations with monotone operators
Differ. Uravn., 1989, Volume 25:8, 1457–1459
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K. B. Sabitov
On the theory of equations of mixed parabolic-hyperbolic type with a spectral parameter
Differ. Uravn., 1989, Volume 25:1, 117–126
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V. A. Sadovnichii, V. V. Dubrovskii, A. V. Nagornyi
Asymptotics of the spectral function of a discrete operator
Differ. Uravn., 1989, Volume 25:8, 1340–1344
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A. P. Sadovskii
The problem of the center and focus for analytic systems with a zero linear part. I
Differ. Uravn., 1989, Volume 25:5, 790–799
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A. P. Sadovskii
The problem of the center and focus for analytic systems with a zero linear part. II
Differ. Uravn., 1989, Volume 25:6, 950–956
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F. Zh. Sadyrbaev
Solutions of an equation of Emden–Fowler type
Differ. Uravn., 1989, Volume 25:5, 799–805
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È. K. Safiev, see V. M. Govorov
Differ. Uravn., 1989, Volume 25:1, 165–167
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V. F. Safonov
Normal forms and regularization of nonlinear singularly perturbed evolution equations
Differ. Uravn., 1989, Volume 25:4, 627–635
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S. M. Samarina
Generalization of the method of characteristics for a nonlocal quasilinear equation
Differ. Uravn., 1989, Volume 25:8, 1459–1462
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T. A. Samarskaya
On a generalization of Steklov's decomposability theorem to the case of nonlocal boundary conditions
Differ. Uravn., 1989, Volume 25:11, 2008–2010
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T. A. Samarskaya
Absolute and uniform convergence of expansions in root functions of a nonlocal boundary value problem of the first kind
Differ. Uravn., 1989, Volume 25:7, 1155–1160
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A. A. Samodurov
On the connection between the Liouville equation and the superradiative cascade equation
Differ. Uravn., 1989, Volume 25:2, 337
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A. M. Samoilenko, R. I. Petrishin
The averaging method in some boundary value problems
Differ. Uravn., 1989, Volume 25:6, 956–964
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V. S. Samovol
Linearization of an autonomous system in a neighborhood of a saddle singular point
Differ. Uravn., 1989, Volume 25:2, 240–246
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A. M. Samson, see V. A. Rantsevich
Differ. Uravn., 1989, Volume 25:3, 540–542
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Yu. I. Sapronov
Two-mode bifurcation of solutions of the von Kármán equation
Differ. Uravn., 1989, Volume 25:6, 1078–1081
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A. V. Savkin
Frequency criteria for the stability and instability of linear periodic systems
Differ. Uravn., 1989, Volume 25:8, 1332–1339
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R. I. Semerdzhieva
A difference method for solving a class of hyperbolic equations with degenerate order
Differ. Uravn., 1989, Volume 25:10, 1755–1766
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V. V. Sergeichuk
Pseudolinear matrix pencils and systems of linear differential equations with meromorphic coefficients
Differ. Uravn., 1989, Volume 25:10, 1721–1727
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V. S. Serov
Interpolation of Besov classes and absolute convergence of Fourier series
Differ. Uravn., 1989, Volume 25:1, 174–176
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A. N. Sesekin
Nonlinear differential equations in a class of functions of bounded variation
Differ. Uravn., 1989, Volume 25:11, 1925–1932
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S. V. Shchepetov, see L. M. Kovrizhnykh
Differ. Uravn., 1989, Volume 25:6, 983–989
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M. V. Sheina, see A. I. Domoshnitskii
Differ. Uravn., 1989, Volume 25:2, 201–208
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B. L. Shekhter
Properties of solutions of a boundary value problem that arises in combustion theory
Differ. Uravn., 1989, Volume 25:5, 805–815
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B. L. Shekhter
The existence of nonzero solutions of a boundary value problem that arises in combustion theory
Differ. Uravn., 1989, Volume 25:6, 964–974
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M. A. Sheshko, G. A. Rasolko
Exact and approximated formulas for the inversion of a multiple integral with Cauchy kernels
Differ. Uravn., 1989, Volume 25:5, 911–915
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T. Shirinkulov, see Sh. A. Alimov
Differ. Uravn., 1989, Volume 25:9, 1584–1588
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L. A. Shuster, see N. A. Chernyavskaya
Differ. Uravn., 1989, Volume 25:10, 1826–1829
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L. A. Shuster, see A. T. Bulabaev
Differ. Uravn., 1989, Volume 25:7, 1107–1114
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K. S. Sibirskii, see D. Bularas
Differ. Uravn., 1989, Volume 25:11, 1856–1862
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K. S. Sibirskii, see V. A. Lunkevich
Differ. Uravn., 1989, Volume 25:6, 1056–1058
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A. S. Silbergleit
Quasistationary solutions of nonlinear autonomous systems
Differ. Uravn., 1989, Volume 25:10, 1807–1809
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M. M. Sirazhudinov
On the Riemann–Hilbert boundary value problem ($L_2$-theory)
Differ. Uravn., 1989, Volume 25:8, 1400–1406
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B. N. Skachkov
Conditions for the dissipativity of an $n$th order equation
Differ. Uravn., 1989, Volume 25:12, 2114–2117
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A. L. Skubachevskii, E. L. Tsvetkov
The second boundary value problem for elliptic differential-difference equations
Differ. Uravn., 1989, Volume 25:10, 1766–1776
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A. L. Skubachevskii
Eigenvalues and eigenfunctions of some nonlocal boundary value problems
Differ. Uravn., 1989, Volume 25:1, 127–136
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S. I. Smagin
Generalized solutions of integral equations of the first kind with weak singularities on closed surfaces
Differ. Uravn., 1989, Volume 25:2, 340–341
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Sh. S. Smagulov, see M. I. Izteleuov
Differ. Uravn., 1989, Volume 25:7, 1227–1232
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V. S. Smorodin, see L. E. Zabello
Differ. Uravn., 1989, Volume 25:11, 2001–2002
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V. A. Sobolev, K. I. Chernyshov
A singularly perturbed differential equation with a Fredholm operator multiplying the derivative
Differ. Uravn., 1989, Volume 25:2, 247–258
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B. V. Sokolov, see B. P. Kufarev
Differ. Uravn., 1989, Volume 25:4, 686–692
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A. P. Soldatov
Higher-order elliptic systems
Differ. Uravn., 1989, Volume 25:1, 136–144
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A. Sopuev, D. T. Dzhuraev
Boundary value problems for a degenerate parabolic-hyperbolic equation
Differ. Uravn., 1989, Volume 25:6, 1009–1015
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A. S. Sorokin
The homogeneous Keldysh–Sedov problem for multiply connected circular domains in the Muskhelishvili class $h_0$
Differ. Uravn., 1989, Volume 25:2, 283–293
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F. V. Srumova
On the asymptotics of the energy of random sources of oscillations for an abstract Cauchy problem
Differ. Uravn., 1989, Volume 25:1, 177–178
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V. V. Stolyarov
Limit cycles and boundedness of a dynamical system
Differ. Uravn., 1989, Volume 25:10, 1823–1824
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V. A. Strizhkov
Asymptotic regularization of integral operators of the first kind with power singularity
Differ. Uravn., 1989, Volume 25:10, 1798–1805
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V. A. Strizhkov
An algorithm for constructing a regularized asymptotic solution of a nonlinear singularly perturbed boundary value problem in the resonance case
Differ. Uravn., 1989, Volume 25:2, 352–355
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M. I. Sumin
Optimal control of objects that can be described by quasilinear elliptic equations
Differ. Uravn., 1989, Volume 25:8, 1406–1416
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T. L. Surin
Exponents of regular Lappo–Danilevskiǐ systems
Differ. Uravn., 1989, Volume 25:3, 543–545
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Yu. B. Suris
Irreducibility of the Schrödinger equation with quasiperiodic potential
Differ. Uravn., 1989, Volume 25:11, 1932–1941
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V. N. Sushch
Control in nonlocal boundary value problems
Differ. Uravn., 1989, Volume 25:1, 145–153
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G. A. Sviridyuk
A problem of Showalter
Differ. Uravn., 1989, Volume 25:2, 338–339
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D. Yu. Sychugov, see L. M. Kovrizhnykh
Differ. Uravn., 1989, Volume 25:6, 983–989
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R. K. Tagiyev
An estimate for the rate of convergence of difference approximations and regularization of a problem of optimal control for a second-order differential equation
Differ. Uravn., 1989, Volume 25:9, 1626–1629
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N. N. Tarkhanov
Removable singularities of Hölder solutions of elliptic systems
Differ. Uravn., 1989, Volume 25:2, 341–342
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A. F. Tedeev
Stabilization of solutions of the first mixed problem for a higher-order quasilinear parabolic equation
Differ. Uravn., 1989, Volume 25:3, 490–498
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S. A. Terziyan
A variational approach to nonresonance problems for semilinear equations in a Hilbert space
Differ. Uravn., 1989, Volume 25:8, 1344–1349
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V. V. Tikhomirov
The unconditional basis property of root vectors of loaded operators
Differ. Uravn., 1989, Volume 25:2, 355–357
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A. N. Tikhonov, see A. A. Arsen'ev
Differ. Uravn., 1989, Volume 25:12, 2027–2043
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S. S. Titov
On analytic solutions of the Korteweg–de Vries equation represented by exponential series
Differ. Uravn., 1989, Volume 25:2, 343
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S. I. Tkachenko, see V. A. Gasilov
Differ. Uravn., 1989, Volume 25:7, 1200–1208
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N. E. Tovmasyan
The Dirichlet problem for second-order elliptic equations in a half-space in a class of functions of polynomial growth
Differ. Uravn., 1989, Volume 25:6, 1015–1023
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I. E. Tralle
A method for constructing a solution of the two-dimensional nonlinear Poisson equation
Differ. Uravn., 1989, Volume 25:2, 343–345
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V. A. Trofimov, see I. G. Zakharova
Differ. Uravn., 1989, Volume 25:7, 1219–1227
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Z. B. Tsalyuk
Asymptotic estimates for the solutions of the renewal equation
Differ. Uravn., 1989, Volume 25:2, 320–325
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N. E. Tsapenko
New formulas for the approximate solution of a one-dimensional wave equation
Differ. Uravn., 1989, Volume 25:11, 1941–1946
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E. L. Tsvetkov, see A. L. Skubachevskii
Differ. Uravn., 1989, Volume 25:10, 1766–1776
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A. Tungatarov
Some integral operators in the theory of generalized analytic functions
Differ. Uravn., 1989, Volume 25:2, 345–347
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A. Tungatarov
A Carleman-Vekua equation with a singular point
Differ. Uravn., 1989, Volume 25:6, 1024–1028
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A. I. Tuzik
Solvability of a discrete equation of convolution type with variable coefficients
Differ. Uravn., 1989, Volume 25:8, 1462–1464
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V. A. Tveritinov
On the second boundary value problem for a parabolic system with one space variable
Differ. Uravn., 1989, Volume 25:12, 2178–2179
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V. M. Tyurin, see Yu. I. Zubko
Differ. Uravn., 1989, Volume 25:10, 1683–1687
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A. S. Shube
Sufficient conditions for the center for a two-dimensional autonomous system with cubic right-hand sides
Differ. Uravn., 1989, Volume 25:11, 2014–2016
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M. Utepbergenov
A method for studying regular singularities of partial differential equations
Differ. Uravn., 1989, Volume 25:3, 499–505
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A. Yu. Uteshev
On the existence of a polynomial Lyapunov function
Differ. Uravn., 1989, Volume 25:11, 2010–2013
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P. N. Vabishchevich
Iterative reduction of a mixed boundary value problem to the Dirichlet problem
Differ. Uravn., 1989, Volume 25:7, 1177–1183
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V. F. Vasilevskii, V. I. Mazhukin
Numerical calculations of temperature waves with weak discontinuities on nets with dynamic adaptation
Differ. Uravn., 1989, Volume 25:7, 1188–1193
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I. A. Vasin, see A. I. Prilepko
Differ. Uravn., 1989, Volume 25:12, 2164–2177
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I. A. Vasin, see A. I. Prilepko
Differ. Uravn., 1989, Volume 25:1, 106–117
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S. A. Vavilov
Investigation of the solvability of a class of boundary value problems with a free boundary
Differ. Uravn., 1989, Volume 25:12, 2075–2081
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S. A. Vavilov, D. A. Ovsyannikov
Applicability of one-particle approximation in a problem of the evolution of beams of charged particles in a longitudinal magnetic field
Differ. Uravn., 1989, Volume 25:7, 1183–1187
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Yu. A. Ved', see M. Imanaliev
Differ. Uravn., 1989, Volume 25:3, 465–477
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O. A. Veliev, see F. G. Maksudov
Differ. Uravn., 1989, Volume 25:3, 400–409
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V. V. Vlasov
Some boundary value problems on a half-axis for a class of integro-differential equations
Differ. Uravn., 1989, Volume 25:10, 1784–1787
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V. V. Vlasov
Solvability of boundary value problems for a class of integro-differential equations on the half-axis
Differ. Uravn., 1989, Volume 25:9, 1589–1599
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V. E. Volkov
Boundedness of the number of orthogonal solutions of the equation $-u''+q(x)u=\lambda u$
Differ. Uravn., 1989, Volume 25:11, 1862–1866
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E. M. Vorob'ev
Partial symmetries and integrable multidimensional differential equations
Differ. Uravn., 1989, Volume 25:3, 461–465
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E. V. Voskresenskii
On a problem of Cesari
Differ. Uravn., 1989, Volume 25:9, 1480–1485
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N. I. Vulpe, see D. Bularas
Differ. Uravn., 1989, Volume 25:11, 1856–1862
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A. I. Yablonskii, see T. S. Bud'ko
Differ. Uravn., 1989, Volume 25:11, 1852–1856
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A. I. Yablonskii, A. F. Korzyuk
Classes of third-order systems with quadratic right-hand sides without moving critical points
Differ. Uravn., 1989, Volume 25:4, 635–640
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A. I. Yablonskii, see S. A. Myzgaeva
Differ. Uravn., 1989, Volume 25:7, 1277–1278
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A. Yanushauskas
An integro-differential operator of potential theory
Differ. Uravn., 1989, Volume 25:2, 325–329
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A. Yanushauskas
Some boundary value problems for elliptic equations whose order degenerates
Differ. Uravn., 1989, Volume 25:6, 1035–1042
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M. Yu. Yunusov
A nonstandard boundary value problem that contains a small parameter
Differ. Uravn., 1989, Volume 25:6, 1028–1035
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V. A. Yurko
Reconstruction of higher-order differential operators
Differ. Uravn., 1989, Volume 25:9, 1540–1550
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L. E. Zabello, V. S. Smorodin
On a connection between maximum principle and dynamic programming in systems with delay
Differ. Uravn., 1989, Volume 25:11, 2001–2002
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L. E. Zabello
On the theory of necessary conditions for optimality with delay and a derivative of the control
Differ. Uravn., 1989, Volume 25:3, 371–379
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V. G. Zadorozhniy
Second-order differential equations in variational derivatives
Differ. Uravn., 1989, Volume 25:10, 1679–1683
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B. V. Zadvornyi
Метод функций Ляпунова и обобщенная непрерывная зависимость решений от начальных данных
Differ. Uravn., 1989, Volume 25:2, 332
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V. F. Zaitsev
Discrete-group analysis of ordinary differential equations
Differ. Uravn., 1989, Volume 25:3, 379–387
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V. P. Zakharov, see Yu. V. Malyshev
Differ. Uravn., 1989, Volume 25:2, 212–216
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I. G. Zakharova, Yu. N. Karamzin, S. V. Polyakov, V. A. Trofimov
Numerical methods for problems of stimulating chemical reactions in a gas by a light pulse
Differ. Uravn., 1989, Volume 25:7, 1219–1227
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G. M. Zayats, see S. I. Gaiduk
Differ. Uravn., 1989, Volume 25:5, 833–839
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A. I. Zeifman
Positivity of the Cauchy matrix of a linear periodic system
Differ. Uravn., 1989, Volume 25:9, 1618–1619
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L. A. Zhelezovskaya, S. E. Zhelezovsky, V. Ph. Kirichenko, V. A. Krys'ko
Symmetrization of an operator of a boundary value problem for a hyperbolic equation
Differ. Uravn., 1989, Volume 25:3, 523–525
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S. E. Zhelezovsky, see L. A. Zhelezovskaya
Differ. Uravn., 1989, Volume 25:3, 523–525
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S. E. Zhelezovsky, V. Ph. Kirichenko, V. A. Krys'ko
Symmetrization of a hyperbolic equation
Differ. Uravn., 1989, Volume 25:4, 652–659
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S. E. Zhelezovsky, V. Ph. Kirichenko, V. A. Krys'ko
The rate of convergence of the Rothe–Galerkin method for a nonclassical system of differential equations
Differ. Uravn., 1989, Volume 25:7, 1208–1219
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Kh. K. Zhemukhov
A boundary value problem with a shift for a fourth-order degenerate quasilinear hyperbolic equation
Differ. Uravn., 1989, Volume 25:9, 1619–1622
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S. V. Zhestkov
On periodic solutions of nonlinear hyperbolic systems in a strip
Differ. Uravn., 1989, Volume 25:10, 1806–1807
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V. V. Zhikov
Spectral approach to asymptotic diffusion problems
Differ. Uravn., 1989, Volume 25:1, 44–50
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E. S. Zhukovskii
On the theory of Volterra equations
Differ. Uravn., 1989, Volume 25:9, 1599–1605
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N. A. Zhura
Boundary value problems for elliptic systems in domains with a piecewise-smooth boundary
Differ. Uravn., 1989, Volume 25:5, 839–843
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I. L. Zinchenko
A theorem on the convergence of complex analytic systems
Differ. Uravn., 1989, Volume 25:10, 1809–1810
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I. L. Zinchenko
On the structure of a stable compact invariant set and a bounded invariant domain of an autonomous complex analytic system
Differ. Uravn., 1989, Volume 25:9, 1485–1495
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V. A. Zolotarevskii
The reduction method for the approximate solution of systems of singular integral equations with vanishing symbols on a closed Lyapunov contour
Differ. Uravn., 1989, Volume 25:5, 884–888
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Yu. I. Zubko, V. M. Tyurin
The property of invertibility of linear differential-difference operators in some spaces of functions on the axis
Differ. Uravn., 1989, Volume 25:10, 1683–1687
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A. L. Zubritskaya, see V. I. Guliaev
Differ. Uravn., 1989, Volume 25:6, 929–933
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