@article{EJDE_2007__2007__a42,
     author = {Liu,  Huifang and Mao,  Zhiqiang},
     title = {Relations between the small functions and the solutions of certain second-order differential equations},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1297.34098},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a42/}
}