%0 Journal Article
%A A. E. Rudenok
%T On limit cycles of a two-dimensional autonomous system with nonlinearities of third degree
%J Differencialʹnye uravneniâ
%D 1987
%P 825-834
%V 23
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_5_a11/
%G ru
%F DE_1987_23_5_a11