%0 Journal Article
%A F. TAKENS
%T Hamiltonian Systems: Generic Properties of Closed Orbits and Local Perturbations.
%J Mathematische Annalen
%D 1970
%P 304-312
%V 188
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1970__188_162054/
%F MAN_1970__188_162054