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1971, Volume 7, Number 12  


Ordinary Differential Equations
Some properties of the solutions of a certain second order equation
V. V. Amel'kin, I. V. Gaishun
2131–2135
The canonical form of a linear two-dimensional system with variable coefficients
N. A. Izobov
2136–2142
Boundary value problems with infinite defect for differential equations with deviating argument
G. A. Kamenskii, A. D. Myshkis
2143–2150
A linear problem of time-optimality in the case of analytic perturbations of the initial conditions
Yu. N. Kiselev
2151–2160
On the problem of the existence of optimal controls
B. Mordukhovich
2161–2167
The existence of periodic solutions in linear systems of general form with a distributed deviation of the argument
V. R. Nosov
2168–2175
On the problem of the analytic construction of optimal regulators
E. Ya. Smirnov
2176–2186
A remark on Tihonov's theorem
I. Zeman
2187–2190

Partial Differential Equations
Coercive solvability of a boundary value problem for a second order elliptic equation in a Banach space. I, II
V. P. Anosov, P. E. Sobolevskii
2191–2198
Generalized kernels of fractional order
M. L. Gol'dman
2199–2210
Integral estimates of the derivatives of $l$-metaharmonic functions in an $N$-dimensional domain in the $L_p$ metric
A. S. Fokht
2211–2224
A geometric picture of the integral surfaces near a singular integral element of a first order partial differential equation
P. V. Sokolov
2225–2233

Integral-Differential and Integral Equations
A multidimensional integral equation with a difference kernel
A. G. Ramm
2234–2239
A certain vector integro-differential equation of elasticity theory
V. P. Rudakov
2240–2245
The order of growth of the resolvent kernels of a system of Volterra integral equations with periodic kernels and lags
Yu. N. Smolin
2246–2252
The existence of a limit as $t\rightarrow \infty $ of the solution of a nonlinear Volterra equation
Z. B. Tsalyuk, M. M. Shamsutdinov
2253–2258
The solution of integro-differential equations with self-regulating lag
N. V. Sharkova
2259–2264

Short Communications
The stability of the zero solution of almost triangular systems of difference equations
E. V. Bysko
2265–2268
The stability of the solution of a linear differential equation with retarded argument
V. Ya. Grebennikov
2269–2274
A remark on the existence of an unbounded solution of a second order linear equation
I. V. Kamenev
2275
Construction of program controls in certain nonlinear systems
G. P. Karpenko
2276–2278
The isochrony of a system of three differential equations in the presence of a family of nonperiodic solutions in the neighborhood of the origin
Z. M. Kochetkova
2279–2282
An upper estimate for the solutions of a nonlinear first order equation of lagging type
Kh. Yu. Kurdanov
2283–2284
The conditions for the center of a certain system of differential equations
A. P. Sadovskii
2285–2286
Certain properties of the polynomial solutions of higher order differential equations
A. Z. Samuilov
2287–2289
 
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