Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1971__5_154056, author = {Dietmar Arlt}, title = {Freudenthal-Invariante.}, journal = {Manuscripta mathematica}, pages = {1--18}, publisher = {mathdoc}, volume = {5}, year = {1971}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MM2_1971__5_154056/} }
Dietmar Arlt. Freudenthal-Invariante.. Manuscripta mathematica, Tome 5 (1971), pp. 1-18. http://geodesic.mathdoc.fr/item/MM2_1971__5_154056/