@article{JRAM_1973__0262_0263_151346,
     author = {Erwin Kreyszig},
     title = {Gew\"ohnliche {Differentialgleichungen} f\"ur {Erzeugende} gewisser {Bergman-Operatoren.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {74--81},
     publisher = {mathdoc},
     volume = {0262_0263},
     year = {1973},
     zbl = {0268.35011},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__0262_0263_151346/}
}