%0 Journal Article
%A Sáez, Eduardo
%A Stange, Eduardo
%A Szántó, Iván
%T Coexistence of small and large amplitude limit cycles of polynomial differential systems of degree four
%J Czechoslovak Mathematical Journal
%D 2007
%P 105-114
%V 57
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMJ_2007__57_1_a8/
%G en
%F CMJ_2007__57_1_a8