@article{MAN_1879__14_156826,
     author = {Beek},
     title = {Zur allgemeinen {Theorie} der {Curven} und {Fl\"achen}},
     journal = {Mathematische Annalen},
     pages = {207--211},
     publisher = {mathdoc},
     volume = {14},
     year = {1879},
     url = {http://geodesic.mathdoc.fr/item/MAN_1879__14_156826/}
}