@article{EJDE_2006__2006__a39,
     author = {Feng,  Meiqiang and Ge,  Weigao},
     title = {Existence of positive solutions for singular eigenvalue problems},
     journal = {Electronic journal of differential equations},
     year = {2006},
     volume = {2006},
     zbl = {1118.34014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a39/}
}