@article{CMH_1931__3_138553,
     author = {H. Weyl},
     title = {Ueber das {Hurwitzsche} {Problem} der {Bestimmung} der {Anzahl} {Riemannscher} {Fl\"achen} von gegebener {Verzweigungsart.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {103--113},
     publisher = {mathdoc},
     volume = {3},
     year = {1931},
     zbl = {57.0150.04},
     url = {http://geodesic.mathdoc.fr/item/CMH_1931__3_138553/}
}