%0 Journal Article
%A Li, Chengzhi
%A Rousseau, Christiane
%A Wang, Xian
%T A Simple Proof for the Unicity of the Limit Cycle in the Bogdanov-Takens System
%J Canadian mathematical bulletin
%D 1990
%P 84-92
%V 33
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-015-3/
%R 10.4153/CMB-1990-015-3
%F 10_4153_CMB_1990_015_3