@article{MZ_1975__141_172153,
     author = {Erhard Heinz and Wolf von Wahl},
     title = {Zu einem {Satz} von {F.} {E.} {Browder} \"uber nichtlineare {Wellengleichungen.}},
     journal = {Mathematische Zeitschrift},
     pages = {33--46},
     publisher = {mathdoc},
     volume = {141},
     year = {1975},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__141_172153/}
}