@article{MZ_1934__38_168488,
     author = {G. Aumann},
     title = {\"Uber den {Differential-} nnd {Differenzenquotient} von regul\"aren analytischen {Funktionen,} insbesondere von {Polynomen}},
     journal = {Mathematische Zeitschrift},
     pages = {70--95},
     publisher = {mathdoc},
     volume = {38},
     year = {1934},
     zbl = {59.0313.05},
     url = {http://geodesic.mathdoc.fr/item/MZ_1934__38_168488/}
}