%0 Journal Article %A Du, Rui-Juan %T Existence of solutions for nonlinear second-order two-point boundary-value problems %J Electronic Journal of Differential Equations %D 2009 %V 2009 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a166/ %G en %F EJDE_2009__2009__a166