Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1969_187_3_a4, author = {Ya. G. Berkovich}, title = {Subgroups, normal divisors and epimorphic images of a finite $p$-group}, journal = {Doklady Akademii Nauk}, pages = {499--501}, publisher = {mathdoc}, volume = {187}, number = {3}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_3_a4/} }
Ya. G. Berkovich. Subgroups, normal divisors and epimorphic images of a finite $p$-group. Doklady Akademii Nauk, Tome 187 (1969) no. 3, pp. 499-501. http://geodesic.mathdoc.fr/item/DAN_1969_187_3_a4/