@article{MZ_1983__182_173289,
     author = {John F. Toland},
     title = {On {Positive} {Solutions} of -...u = {F(x,} u).},
     journal = {Mathematische Zeitschrift},
     pages = {351--358},
     publisher = {mathdoc},
     volume = {182},
     year = {1983},
     zbl = {0491.35048},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__182_173289/}
}