@article{MAN_1891__39_157575,
     author = {G. Scheffers},
     title = {Zur\"uckf\"uhrung complexer {Zahlensysteme} auf typische {Formen}},
     journal = {Mathematische Annalen},
     pages = {293--390},
     publisher = {mathdoc},
     volume = {39},
     year = {1891},
     zbl = {23.0384.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1891__39_157575/}
}