@article{JRAM_1843__25_147165,
     author = {H. Grassmann},
     title = {Theorie der {Centralen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {57--73},
     year = {1843},
     volume = {25},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1843__25_147165/}
}