@article{MZ_1936__41_168695,
     author = {G. Doetsch},
     title = {Konvexe {Kurven} und {Fu{\ss}punktkurven}},
     journal = {Mathematische Zeitschrift},
     pages = {717--731},
     publisher = {mathdoc},
     volume = {41},
     year = {1936},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__41_168695/}
}