%0 Journal Article
%A Zhang, Xingyong
%A Zhou, Yinggao
%T On periodic solutions of non-autonomous second order Hamiltonian systems
%J Applications of Mathematics
%D 2010
%P 373-384
%V 55
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.1007/s10492-010-0013-9/
%R 10.1007/s10492-010-0013-9
%G en
%F 10_1007_s10492_010_0013_9