%0 Journal Article
%A Patricio L. Felmer
%T Subharmonics near an equilibrium point for Hamiltonian systems.
%J Manuscripta mathematica
%D 1990
%P 359-396
%V 66
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1990__66_1_155480/
%F MM2_1990__66_1_155480