@article{EJDE_2005__2005__a234,
     author = {Zhang, Zhenguo and Wang, Chunjiao and Li, Qiaoluan and Li, Fang},
     title = {Throughout positive solutions of second-order nonlinear differential equations},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2005},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a234/}
}