%0 Journal Article
%A A. A. Samodurov
%T Problem of the center and the integrating factor for a Li\'enard equation
%J Differencialʹnye uravneniâ
%D 1981
%P 936-940
%V 17
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1981_17_5_a23/
%G ru
%F DE_1981_17_5_a23