@article{MAN_1879__15_156861,
     author = {Voss},
     title = {Zur {Theorie} der linearen {Connexe}},
     journal = {Mathematische Annalen},
     pages = {355--358},
     year = {1879},
     volume = {15},
     zbl = {11.0590.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1879__15_156861/}
}