%0 Journal Article
%A Yu. V. Churin
%T The behavior of periodic solutions of a system of second order differential equations with polynomial right-hand sides
%J Differencialʹnye uravneniâ
%D 1968
%P 1821-1834
%V 4
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1968_4_10_a6/
%G ru
%F DE_1968_4_10_a6