
Degenerate linear differential equations. IV V. P. Glushko

599 

Certain sufficient conditions for the asymptotic stability of the zero solution of a nonautonomous system of two differential equations G. S. Krechetov

612 

The integral matrix of a certain system of differential equations P. B. Golokvoschyus

626 

The integration in closed form of certain linear systems of second order ordinary differential equations V. M. Merkis

641 

On a Floquet theory for equations with retarded argument Yu. I. Lyubich, V. A. Tkachenko

648 

On the question of the Ljapunov stability of resonance solutions of certain multifrequency systems with a weak constraint L. D. Akulenko

657 

On the theory of optimal processes in linear systems with lag R. Gabasov, S. V. Churakova

662 

Some theorems on Ljapunov's second method S. K. Persidskii

678 

The construction of the set of systems of differential equations of stable motion with respect to an integral variety R. G. Mukharlyamov

688 

On the analytic theory of ordinary differential equations with deviating argument È. I. Grudo

700 

The third boundaryvalue problem for the halfplane with boundary conditions which contain variable coefficients I. A. Strakhov

712 

Solution of certain differential equations in classes of functions which are quasianalytic with respect to linear differential operators V. G. Hryptun

724 

Periodic solution of systems of partial differential equations of neutral type B. P. Tkach

735 

Short Communications


The instability of the singular exponents and the nonsymmetry of the relation of reducibility of linear systems of differential equations V. M. Millionshchikov

749 

A remark on the stability of twopoint pseudoRunge–Kutta methods A. F. Klement'ev

751 

A certain hypothesis in the theory of the stability of nonlinear systems G. A. Leonov

753 

The asymptotic behavior of the solutions of a nonlinear integrodifferential equation L. V. Burkova

757 

Solution of a plane Cauchy problem for the differential equation system of the theory of heat and mass transfer N. N. Samuilov

762 

The eigenfunction expansion of certain linear integrodifferential equations B. I. Aleksandriiskii

764 

A certain inequality for the solution of the Dirichlet problem in a ball A. S. Tsygankov

768 

An analogue of the method of lines for a first order equation in a Banach space Sh. I. Ibragimov

772 