Includes bibliographical references.

Inequalities /; On differential properties of measurable functions /; On the surfaces without tangent planes /; Variational problems with admissible surfaces of arbitrary topological types /; On periodicity problems in the calculus of variations in the large /; An external problem for polynomials /; On the number of limit cycles of the equation frac {dy}{dx}= \frac {P(x,y)}{Q(x,y)} where and are polynomials /; On a theorem of Phragm�en-Lindel�of type for a system of partial differential equations /; Systems of integral equations on a half line with kernels depending on the difference of arguments /; On the coefficients of trigonometric null-series /; On Fourier coefficients of continuous functions / V. I. and Steckin Levin, S. B.; I. Ya. Plamennov; Alda Vaclav; A. G. Sigalov; S. I. Alber; S. B. Steckin; E. M. and Petrovskii Landis, I. G.; G. E. Silov; I. C. and Krein Gohberg, M. G.; O. S. Ivasev-Musatov; S. B. Steckin