%0 Journal Article
%T Infinitely many periodic solutions for subquadratic second-order Hamiltonian systems
%A Hua Gu and Tianqing An
%J Boundary Value Problems
%D 2013
%I 
%R 10.1186/1687-2770-2013-16
%X In this paper, we investigate the existence of infinitely many periodic solutions for a class of subquadratic nonautonomous second-order Hamiltonian systems by using the variant fountain theorem.
%U http://www.boundaryvalueproblems.com/content/2013/1/16/abstract