@article{GDZPPN002259877,
title = {Zur Bolyai-Lobatschefskijschen Geometrie},
journal = {Mathematische Annalen},
volume = {58},
year = {1904},
pages = {314-320},
language = {de},
url = {http://dml.mathdoc.fr/item/GDZPPN002259877}
}
Schur, Friedrich. Zur Bolyai-Lobatschefskijschen Geometrie. Mathematische Annalen, Tome 58 (1904) pp. 314-320. http://gdmltest.u-ga.fr/item/GDZPPN002259877/