@article{MZ_1950__52_169151,
     author = {C. CARATH\`EODORY},
     title = {Bemerkung \"uber die {Definition} der {Riemannschen} {Fl\"achen}},
     journal = {Mathematische Zeitschrift},
     pages = {703--708},
     publisher = {mathdoc},
     volume = {52},
     year = {1950},
     zbl = {0039.08501},
     url = {http://geodesic.mathdoc.fr/item/MZ_1950__52_169151/}
}