@article{JRAM_1861__58_147800,
     author = {E.B. Christoffel},
     title = {Zur {Abhandlung:} },
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {90},
     publisher = {mathdoc},
     volume = {58},
     year = {1861},
     language = {de},
     url = {https://geodesic-test.mathdoc.fr/item/JRAM_1861__58_147800/}
}