@article{EJDE_2008__2008__a69,
     author = {Liu,  Yang},
     title = {Existence of solutions for a fourth-order boundary-value problem},
     journal = {Electronic journal of differential equations},
     year = {2008},
     volume = {2008},
     zbl = {1172.34305},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a69/}
}