Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1968_182_2_a0, author = {Ya. G. Berkovich}, title = {Normal divisors of a finite group}, journal = {Doklady Akademii Nauk}, pages = {247--250}, publisher = {mathdoc}, volume = {182}, number = {2}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_182_2_a0/} }
Ya. G. Berkovich. Normal divisors of a finite group. Doklady Akademii Nauk, Tome 182 (1968) no. 2, pp. 247-250. http://geodesic.mathdoc.fr/item/DAN_1968_182_2_a0/