Translation of Differen�t�sial�nye uravneni�i�a s chastnymi proizvodnymi.

Includes bibliographical references.

Some questions in spectral theory for partial differential equations /; Application of the methods of the mathematical theory of diffraction to the problem of the asymptotic behavior of the eigenvalues and eigenfunctions of the Laplace operator /; Imbedding theory for classes of differentiable functions of several variables /; The theory of non-Fredholm elliptic boundary value problems /; Sobolev-Slobodecki�i spaces of variable order with weighted norms and their applications to mixed elliptic boundary problems /; On the convergence of the modified method of steepest descent in the calculation of eigenvalues /; Nonclassical boundary value problems /; Asymptotic behavior of the solutions of certain boundary value problems of mathematical physics for \to \infty /; On Poisson kernels for boundary value problems with the Bessel differential operator /; Boundary value problems for differential and integro-differential equations in domains with a degenerate contour /; A mathematical description of the oscillations of a material point on an elasto-plastic element /; Lie theorems for generalized translation operators /; Inequalities of Markov type and Ritz polynomial approximations /; Some problems in the theory of differential equations with deviating argument /; Weak solutions in the Sobolev sense for a system of boundary layer equations /; Some questions from the general theory of difference schemes /; Improperly posed problems /; The method of fractional steps for the solution of problems in continuum mechanics / R. A. Aleksandrjan, Ju. M. Berezanskii, V. A. Ilin and A. G. Kostjucenko; V. M. Babic; O. V. Besov, V. P. Ilin, L. D. Kudrjavcev, P. I. Lizorkin and S. M. Nikolskii; A. V. Bicadze; M. I. Visik; S. K. Godunov, V. V. Ogneva and G. P. Prokopov; A. A. Dezin and V. N. Maslennikova; T. I. Zelenjak and V. P. Mihailov; I. A. Kiprijanov and M. I. Kljucancev; V. I. Kondrasov; M. A. Krasnoselskii; B. M. Levitan; S. G. Mihlin; A. D. Myskis; O. A. Oleinik; A. A. Samarskii; A. N. Tihonov, V. K. Ivanov and M. M. Lavrentev; N. N. Janenko