%0 Journal Article
%A Yu. V. Malyshev
%A V. P. Zakharov
%T Detection of a limit cycle in the Li\'enard equation by means of generalized Lyapunov functions
%J Differencialʹnye uravneniâ
%D 1992
%P 1635-1638
%V 28
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1992_28_9_a21/
%G ru
%F DE_1992_28_9_a21