@article{MZ_1957__67_169650,
     author = {Wolfgang Walter},
     title = {Ganze {L\"osungen} der {Differentialgleichung} ...u = f(u).},
     journal = {Mathematische Zeitschrift},
     pages = {32--37},
     publisher = {mathdoc},
     volume = {67},
     year = {1957},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1957__67_169650/}
}