Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1970_8_4_a9, author = {V. A. Artamonov}, title = {Free $n$-groups}, journal = {Matemati\v{c}eskie zametki}, pages = {499--507}, publisher = {mathdoc}, volume = {8}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a9/} }
V. A. Artamonov. Free $n$-groups. Matematičeskie zametki, Tome 8 (1970) no. 4, pp. 499-507. http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a9/