@article{JRAM_1896__116_148996,
     author = {Georg Landsberg},
     title = {Ueber {Fundamentalsysteme} und bilineare {Formen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {331--349},
     year = {1896},
     volume = {116},
     zbl = {27.0080.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1896__116_148996/}
}