Voir la notice de l'article provenant de la source Math-Net.Ru
@article{CHEB_2011_12_2_a18, author = {N. A. Shchuchkin}, title = {The free abelian $n$-ary groups}, journal = {\v{C}eby\v{s}evskij sbornik}, pages = {163--170}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {2011}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/CHEB_2011_12_2_a18/} }
N. A. Shchuchkin. The free abelian $n$-ary groups. Čebyševskij sbornik, Tome 12 (2011) no. 2, pp. 163-170. http://geodesic.mathdoc.fr/item/CHEB_2011_12_2_a18/