"Published by the American Mathematical Society ... under a grant from the National Science Foundation"--Title page.

Includes bibliographical references.

On the inverse theorem of �Cetaev /; The stability of the solutions of periodic systems of total differential equations /; On a functional problem for ordinary differential equations /; On the inversion of Ljapunov's second theorem on stability of motion /; On the existence and uniqueness of solutions of the non-stationary problems for flows of non-compressible fluids /; On general boundary problems for elliptic differential equations /; The Cauchy problem for equations with operator coefficients; mixed boundary value problem for systems of differential equations and approximation methods for their solution /; On the solution by the method of grids of the inner Dirichlet problem for the Laplace equation / Ivo Vrkoc; V. G. Egorov; L. N. Esukov; Jaroslav Kurzweil; A. A. Kiselev and O. A. Ladyzenskaya; M. L. Visik; M. L. Visik; E. A. Volkov