@article{EJDE_2007__2007__a274,
     author = {Padhi,  Seshadev and Qian,  Chuanxi},
     title = {On asymptotic behaviour of oscillatory solutions for fourth order differential equations},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1118.34028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a274/}
}