@article{MZ_1939__45_168853,
     author = {H., Kapferer},
     title = {Beweis eines {Fundamentalsatzes} der {Kurven} 3. {Ordnung}},
     journal = {Mathematische Zeitschrift},
     pages = {312--318},
     publisher = {mathdoc},
     volume = {45},
     year = {1939},
     zbl = {0020.39001},
     url = {http://geodesic.mathdoc.fr/item/MZ_1939__45_168853/}
}