Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1972__198_162303, author = {Ottmar Loos}, title = {Alternative {Tripelsysteme.}}, journal = {Mathematische Annalen}, pages = {205--238}, publisher = {mathdoc}, volume = {198}, year = {1972}, zbl = {0232.17004}, url = {http://geodesic.mathdoc.fr/item/MAN_1972__198_162303/} }
Ottmar Loos. Alternative Tripelsysteme.. Mathematische Annalen, Tome 198 (1972), pp. 205-238. http://geodesic.mathdoc.fr/item/MAN_1972__198_162303/