@article{MAN_1930__103_159431,
     author = {H. Welke},
     title = {\"Uber die analytischen {Abbildungen} von {Kreisk\"orpern} und {Hartogsschen} {Bereichen}},
     journal = {Mathematische Annalen},
     pages = {437--449},
     publisher = {mathdoc},
     volume = {103},
     year = {1930},
     zbl = {56.0290.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1930__103_159431/}
}