%0 Journal Article
%A G. S. Rychkov
%T Uniqueness of the limit cycle of the equation $(y-P_3(x))dy=P_1(x,y)dx$ in the presence of three singular points
%J Differencialʹnye uravneniâ
%D 1983
%P 904-905
%V 19
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1983_19_5_a18/
%G ru
%F DE_1983_19_5_a18