%0 Journal Article
%A Llibre, Jaume
%A Makhlouf, Amar
%T Limit cycles for fourth-order autonomous differential equations
%J Electronic Journal of Differential Equations
%D 2012
%V 2012
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a30/
%G en
%F EJDE_2012__2012__a30