@article{MAN_1994__298_2_165185,
     author = {Z.Q. Chen and R.J. Williams and Z. Zhao},
     title = {On the existence of positive solutions of semilinear elliptic equations with {Dirichlet} boundary conditions.},
     journal = {Mathematische Annalen},
     pages = {543--556},
     publisher = {mathdoc},
     volume = {298},
     number = {2},
     year = {1994},
     zbl = {0790.35038},
     url = {http://geodesic.mathdoc.fr/item/MAN_1994__298_2_165185/}
}