@article{AM2_1972__8_136276,
     author = {Walter Petry},
     title = {Iterative {L\"osung} gewisser nichtlinearer {Operatorgleichungen} mit {Anwendung} auf quasilineare {Differentialgleichungen.}},
     journal = {Aequationes mathematicae},
     pages = {113--135},
     publisher = {mathdoc},
     volume = {8},
     year = {1972},
     zbl = {0248.35104},
     url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136276/}
}