%0 Journal Article
%A Li Xiao
%T Existence of Periodic Solutions for Second Order Hamiltonian System
%J Bulletin of the Malaysian Mathematical Society
%D 2012
%V 35
%N 3
%U http://geodesic.mathdoc.fr/item/BMMS_2012_35_3_a16/
%F BMMS_2012_35_3_a16