%0 Journal Article
%A Zhao, Cheng-Dong
%A He, Qi-Min
%T On the center of the generalized Liénard system
%J Czechoslovak Mathematical Journal
%D 2002
%P 817-832
%V 52
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMJ_2002__52_4_a13/
%G en
%F CMJ_2002__52_4_a13