@article{GDZPPN002244438,
title = {Zur Theorie der orthogonalen Substitutionen},
journal = {Mathematische Annalen},
volume = {13},
year = {1878},
pages = {320-374},
url = {http://dml.mathdoc.fr/item/GDZPPN002244438}
}
Voss. Zur Theorie der orthogonalen Substitutionen. Mathematische Annalen, Tome 13 (1878) pp. 320-374. http://gdmltest.u-ga.fr/item/GDZPPN002244438/