%0 Journal Article
%A L. I. Zhilevich
%T On the existence and location of limit cycles in an autonomous system
%J Differencialʹnye uravneniâ
%D 1985
%P 1079-1081
%V 21
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_6_a23/
%G ru
%F DE_1985_21_6_a23