%0 Journal Article
%A M. T. Terekhin
%T Periodic solutions of a certain nonautonomous system of differential equations
%J Differencialʹnye uravneniâ
%D 1966
%P 778-782
%V 2
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1966_2_6_a5/
%G ru
%F DE_1966_2_6_a5