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 Ordinary Differential Equations Certain solutions of systems of ordinary differential equations with polynomial right hand side. I, IIL. A. Beklemisheva 1739 The stability in the large of the zero solution of certain fifth order nonlinear differential equationsL. I. Burganskaya 1752 The structure of solutions of a certain system of two differential equations. IÈ. I. Grudo 1765 The solvability of certain boundary value problems for a second order ordinary differential equationV. V. Gudkov, A. Ya. Lepin 1779 On the optimization of control systems in the presence of constraints. I, IIM. I. Gusev, A. B. Kurzhanskii 1789 The solutions of the Briot and Bouquet equation with constant deviations of the argument in the case of simple roots of the characteristic equationN. P. Kovalevskiĭ 1801 The singular separatrix cycles of a quadratic differential equation that has a straight line as a solutionI. S. Kukles, I. G. Rozet 1813 A certain matrix method in the theory of oscillationsV. N. Laptinskii 1819 The construction of the differential equations of optimal motion for a given varietyR. G. Mukharlyamov 1825 Partial Differential Equations The splitting principle for nonselfadjoint partial differential operatorsI. I. Golichev 1835 The generalized localization principle for spectral expansions connected with the Beltrami operatorG. A. Il'yushina 1845 Boundary value problems for Petrovskiǐ well-posed equations of positive genus in the planeF. G. Selezneva, S. D. Èidel'man 1854 The coefficient stability of the solution of the Dirichlet problem for the equation $div\{k(x) grad u\}=-f(x)$P. K. Senatorov 1869 Finite difference equations Difference schemes for the solution of ill-posed abstract Cauchy problemsA. B. Bakushinskii 1876 Certain sufficient conditions for stability of the Bubnov-Galerkin method for a boundary value problem in Hilbert spaceM. A. Veliev 1886 Short Communications Stability of linear homogeneous differential equations with delayed argumentM. I. Artem'ev 1895 The reducibility of a system of two differential equations to normal formYu. N. Bibikov 1899 An application of the method of Ljapunov functions to the investigation of oscillations in nonlinear systems with lagR. E. Ginzburg 1903 Asymptotic behavior of the solutions of invariant linear systems of differential equationsM. V. Zaretskii 1906 The first boundary value problem for a charged system of quasi-linear parabolic equationsA. D. Iskenderov 1911 The extendability of the solutions of equations with delayed argumentO. I. Kyun 1914 The existence and uniqueness of the solution of a certain boundary value problemA. V. Finkelstein 1918