Differ. Uravn., 1985, Volume 21, Number 6

Differentsial'nye Uravneniya

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1985, Volume 21, Number 6

Ordinary Differential Equations
	The direction vector method for investigating the stability of singular points of nonlinear systems. II. Partial results, examples and discussions A. V. Zhevnyak	923–932
	Estimates for periodic solutions of systems of second-order nonlinear differential equations A. A. Zevin	932–937
	Third-order equations without moving critical singularities I. P. Martynov	937–946
	Generic properties of conditional exponential stability. XI V. M. Millionshchikov	946–955
	Nonlocal problems in the theory of optimal processes. II A. Ya. Narmanov, N. N. Petrov	955–962
	Characteristic Lyapunov exponents of a regular system with nonlinear perturbation and random inhomogeneity Nguyen Dinh Cong	962–974
	Asymptotic behavior of solutions of a multidimensional system S. K. Norkin	974–978
	Optimality of generalized actions Yu. V. Orlov	978–986
	Regularized traces of higher-order differential operators with retarded argument M. Pikula	986–991
	The maximum number of limit cycles of the equation $(y-P_3(x))dy=P_1(x,y)dx$ in the case of three singular points G. S. Rychkov	991–997
	Asymptotic behavior of the solution of a boundary value problem for a singularly perturbed system of ordinary differential equations A. A. Shishkin, G. B. Gurov	997–1006

Partial Differential Equations
	The conjugacy problem for an elliptic system of first-order differential equations with derivatives in the boundary condition I. A. Bikchantaev	1007–1013
	Periodic solutions of singularly perturbed equations of elliptic type A. B. Vasil'eva, M. A. Petrova	1013–1020
	Weighted spherical functions and singular pseudodifferential operators L. N. Lyakhov	1020–1032
	The spectrum of a stationary single-velocity transport equation with linear dependence of the scattering law on the angles R. S. Makin	1032–1036
	$H_p$-estimates for solutions of the Cauchy problem for differential operators that decompose into wave factors A. V. Perzhan	1037–1046
	Estimation of the change in the solution of the Dirichlet problem under variation of the domain È. M. Saak	1047–1051

Integral Equations and Integral-Differential
	Existence and stability of solutions of linear functional-differential equations in weighted Lebesgue spaces L. M. Berezanskii	1052–1059
	Equations of the first kind with elliptic integrals in the kernel M. M. Khapaev (Jr.)	1059–1067

Short Communications
	Bifurcations of waves described by parabolic systems in a circular cylinder V. A. Vol'pert, A. I. Vol'pert	1068–1070
	Regular multidimensional differential equations I. V. Gaishun, N. A. Portyanko	1071–1073
	Perturbed Euler differential system P. B. Golokvoschyus	1074–1076
	Localization principle for solutions of the Cauchy problem for parabolic systems in the class of generalized infinite-order functions V. V. Gorodestkii	1077–1079
	On the existence and location of limit cycles in an autonomous system L. I. Zhilevich	1079–1081
	Double expansion in series of eigenfunctions of the Orr–Sommerfeld problem Z. Kadelburg	1082–1085
	Sequential analysis of periodic systems with a small parameter multiplying the derivative in the presence of purely imaginary (including identically multiple) points in the spectrum of the limit operator Yu. A. Konyaev	1085–1089
	On an approximating sequence S. A. Mazanik	1089–1091
	The structure of solutions of Jacobi systems with periodic coefficients K. V. Mal'kov	1091–1095
	Length of the gaps in the continuous spectrum of the Sturm–Liouville operator P. A. Mishnaevskii	1095–1097
	A remark on the inversion formula for Wimp's integral transformation with respect to the index S. B. Yakubovich	1097–1098

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