@article{MAN_1927__97_182642,
     author = {W. Wirtinger},
     title = {Zur formalen {Theorie} der {Funktionen} von mehr komplexen {Ver\"anderlichen}},
     journal = {Mathematische Annalen},
     pages = {357--376},
     publisher = {mathdoc},
     volume = {97},
     year = {1927},
     zbl = {52.0342.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1927__97_182642/}
}