%0 Journal Article
%A Ren, Jingli
%A Siegmund, Stefan
%A Chen, Yueli
%T Positive periodic solutions for third-order nonlinear differential equations
%J Electronic Journal of Differential Equations
%D 2011
%V 2011
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a87/
%G en
%F EJDE_2011__2011__a87