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 Ordinary Differential Equations The stability of periodic motions in transcendental critical casesYu. N. Bibikov 1927 A functionalization of the parameter and a theorem of relatedness for autonomous systemsN. A. Bobylev, M. A. Krasnosel'skii 1946 The global stability of the solutions of a certain third order nonlinear system with a nonlinearity of the type of $f(x, y)$I. V. Gaishun 1953 Certain criteria for stability of motion in the presence of constantly acting perturbationsK. A. Karacharov 1963 The singular points of the solution of systems of second order differential equationsS. G. Kondratenya, A. I. Yablonskii 1970 The use of operators that have certain properties in qualitative investigations of differential equationsYu. K. Metlyaev 1976 The stability of a linear system that is subject to the influence of a Markov chainG. N. Mil'shtein 1982 Completeness of the sequence of solutions of a second order linear differential equation in a star-shaped domain with respect to a regular singular point of this equationV. V. Ryndina 1994 Comparison theorems for the norms of the solutions of linear homogeneous differential equations in Hilbert spacesV. V. Smagin, P. E. Sobolevskii 2005 Eigenfunction expansion of second order nonselfadjoint differential equationsV. N. Funtakov 2011 Partial Differential Equations The Dirichlet problem for elliptic equations with unbounded lowest coefficients. I, IIN. I. Brisch, I. N. Yashkina 2021 Estimates of the eigenfunctions of Laplace's operator in certain domainsM. L. Gol'dman 2030 Asymptotic formulae for eigenvalues of second order elliptic operators that are degenerate on the axis of a cylinderA. F. Goryunov 2041 Ljapunov functions and Cauchy problems for certain systems of partial differential equationsS. G. Krein, V. B. Osipov 2053 An initial value problem for systems with constant coefficientsF. G. Selezneva, S. D. Èidel'man 2062 Finite difference equations A general solution of a finite difference problem for the equation $div(K\nabla \Psi )=F$ with piecewise constant $\chi$ and with Neumann conditions on a part of the boundaryI. M. Velikoivanenko, I. I. Lyashko, G. E. Mistetskiy 2074 Short Communications A theorem on the uniqueness of the $O$-curve in $N_2$ under conditions of the type of the Osgood conditionA. F. Andreev, V. Kuznetsov 2080 Specialized stability in a finite interval of timeS. S. Belyavsky 2083 The active control of the rotational motion of a solid bodyV. I. Zubov 2086 Estimates for the solutions of a certain first order differential equationG. S. Krechetov 2088 A certain example of a dynamical systemN. N. Ladis 2092 The regularization of linear equations in Banach spaces. IIO. A. Liskovets 2094 The stability of controlled motion with aftereffect along a given trajectoryA. A. Martynyuk, I. G. Kozubovskaya 2096 Exponential decay of the solution of a hyperbolic equationA. G. Ramm 2099 Power asymptotics of order $p<0$ of the solutions of a nonautonomous differential system with a singular point of higher orderA. A. Shestakov 2101