%0 Journal Article
%A Bendjeddou, Ahmed
%A Cheurfa, Rachid
%T Cubic and quartic planar differential systems with exact algebraic limit cycles
%J Electronic Journal of Differential Equations
%D 2011
%V 2011
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a4/
%G en
%F EJDE_2011__2011__a4