@article{MZ_1967__101_170828,
     author = {H. Wittich},
     title = {\"Uber einen {Satz} von {G.} {H.} {Halphen.}},
     journal = {Mathematische Zeitschrift},
     pages = {83--94},
     publisher = {mathdoc},
     volume = {101},
     year = {1967},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__101_170828/}
}