@article{MAN_1901__54_158001,
     author = {C.F. Geiser and L. Maurer},
     title = {Elwin {Bruno} {Christoffel.}},
     journal = {Mathematische Annalen},
     pages = {329--340},
     publisher = {mathdoc},
     volume = {54},
     year = {1901},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1901__54_158001/}
}