%0 Journal Article
%A I. S. Kukles
%A I. G. Rozet
%T A certain case of generation of limit cycles on a plane
%J Differencialʹnye uravneniâ
%D 1970
%P 771-778
%V 6
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1970_6_5_a0/
%G ru
%F DE_1970_6_5_a0