Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1999_29_1a_6, author = {J. U\v{s}an}, title = {A note on n-groups for n > 3}, journal = {Novi Sad Journal of Mathematics}, pages = {55-60}, publisher = {mathdoc}, volume = {29}, number = {1}, year = {1999}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1999_29_1a_6/} }
J. Ušan. A note on n-groups for n > 3. Novi Sad Journal of Mathematics, Tome 29 (1999) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_1999_29_1a_6/