@article{GDZPPN002306670,
title = {Alternative Tripelsysteme.},
journal = {Mathematische Annalen},
volume = {196},
year = {1972},
pages = {205-238},
zbl = {0232.17004},
url = {http://dml.mathdoc.fr/item/GDZPPN002306670}
}
Loos, Ottmar. Alternative Tripelsysteme.. Mathematische Annalen, Tome 196 (1972) pp. 205-238. http://gdmltest.u-ga.fr/item/GDZPPN002306670/