@article{EJDE_2009__2009__a66,
     author = {Du,  Rui-Juan},
     title = {Existence of solutions for nonlinear second-order two-point boundary-value problems},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1188.34025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a66/}
}