%0 Journal Article
%A L. A. Cherkas
%T Limit cycles of autonomous systems with phase space $\mathbf C^2$
%J Differencialʹnye uravneniâ
%D 1987
%P 848-851
%V 23
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_5_a14/
%G ru
%F DE_1987_23_5_a14