@article{EJDE_2004__2004__a61,
     author = {Sun,  Yong-Ping and Sun,  Yan},
     title = {Positive solutions for singular semi-positone {Neumann} boundary-value problems},
     journal = {Electronic journal of differential equations},
     year = {2004},
     volume = {2004},
     zbl = {1076.34023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a61/}
}