Ordinary Differential Equations


Generalized regular systems B. F. Bylov

575 

Conditions for the applicability of Čaplygin's theorem to a certain multipoint linear difference boundary value problem of order $n$ G. V. Gusel'nikova

592 

Asymptotic series for the eigenvalues and eigenfunctions of second order selfadjoint operators G. V. Zhdanova

603 

The asymptotic stability of sets in dispersive dynamical systems M. S. Izman

615 

A second order dynamical system with a given particular integral L. S. Lavrinovich

622 

Ideally observable systems M. S. Nikol'skii

631 

Periodic solutions of systems of linear equations of general form with deviating argument V. R. Nosov

639 

The behavior of the solutions of a sequence of second order periodic systems with a small nonlinearity V. A. Pliss

651 

Partial Differential Equations


The third exterior boundary value problem for a second order elliptic equation. I I. A. Danilova

661 

Conditions for the convergence of spectral decompositions that correspond to selfadjoint extensions of elliptic operators. I. Selfadjoint extension of the Laplace operator with a point spectrum V. A. Il'in, Sh. A. Alimov

670 

On the Gevrey theory for parabolic potentials. I, II L. I. Kamynin

711 

Closure in the metric of the generalized Dirichlet integral S. A. Laptev

727 

Expansion in eigenfunctions of a nonselfadjoint differential operator of an exterior boundary value problem A. G. Ramm

737 

Short Communications


The order of the convergence of the method of least squares for the Dirichlet problem L. A. Boziev

743 

The behavior of the solution of systems of two differential equations in the neighborhood of an essential singularity S. G. Kondratenya

747 

The problem of the conjugacy of certain nonstationary differential equations of order $2m$ V. I. Korzyuk

750 

Coefficient stability of the solutions of second order ordinary differential equations and of parabolic equations on the plane P. K. Senatorov

754 

A certain onedimensional scattering problem in the quasiclassical approximation S. G. Simonyan

759 