%0 Journal Article
%A Thomas Bartsch
%A Mónica Clapp
%T The compact category and mulitple periodic solutions of Hamiltionian systems on symmetric starshaped energy surfaces.
%J Mathematische Annalen
%D 1992
%P 523-542
%V 293
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164974/
%F MAN_1992__293_4_164974