@article{MAN_1891__39_157571,
     author = {A. Voss},
     title = {Zur {Theorie} der {Kr\"ummung} der {Fl\"achen.}},
     journal = {Mathematische Annalen},
     pages = {179--256},
     publisher = {mathdoc},
     volume = {39},
     year = {1891},
     zbl = {23.0793.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1891__39_157571/}
}