%0 Journal Article
%T Periodic solutions of nonlinear differential equations
%A Xiaojing Yang
%J International Journal of Mathematics and Mathematical Sciences
%D 2000
%I Hindawi Publishing Corporation
%R 10.1155/s0161171200003185
%X The periodic boundary value problems of a class of nonlinear differential equations are investigated.
%U http://www.hindawi.com/journals/ijmms/2000/301290/abs/