@article{MAN_1901__54_158004,
     author = {E.B. Christoffel},
     title = {Vollst\"andige {Theorie} der {Riemann'schen} {d-Function.} {(Mit} 3 {Figuren} im {Text)}},
     journal = {Mathematische Annalen},
     pages = {347--399},
     publisher = {mathdoc},
     volume = {54},
     year = {1901},
     zbl = {32.0457.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1901__54_158004/}
}