%0 Journal Article
%A Urbina, A.M.
%T Limit Cycles of Liénard Equations With Non Linear Damping
%J Canadian mathematical bulletin
%D 1993
%P 251-256
%V 36
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1993-036-x/
%R 10.4153/CMB-1993-036-x
%F 10_4153_CMB_1993_036_x