@article{JRAM_1844__28_147257,
     author = {H. Umpfenbach},
     title = {Von den vielfachen {Puncten} einer krummen {Fl\"ache.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {380--380},
     year = {1844},
     volume = {28},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1844__28_147257/}
}