%0 Journal Article
%A Jaume Llibre
%A Marco Antonio Teixeira
%T Periodic solutions of discontinuous second order differential systems
%J Journal of Singularities
%D 2014
%P 183-190
%V 10
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2014.10l/
%R 10.5427/jsing.2014.10l
%F 10_5427_jsing_2014_10l