%0 Journal Article
%A A. I. Yablonskii
%T On limit cycles of a certain differential equation
%J Differencialʹnye uravneniâ
%D 1966
%P 335-344
%V 2
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1966_2_3_a4/
%G ru
%F DE_1966_2_3_a4