@article{JRAM_1871__73_148145,
     author = {R. Baltzer},
     title = {Ueber den {Ausdruck} des {Tetraeders} durch die {Coordinaten} der {Eckpunkte.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {94--95},
     publisher = {mathdoc},
     volume = {73},
     year = {1871},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1871__73_148145/}
}