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@article{FORUM_1991__3_2_186408, author = {J.C. BEIDLEMAN and D.J.S. ROBINSON}, title = {On the {Structure} of the {Normal} {Subgroups} of a {Group:} {Nilpotency.}}, journal = {Forum mathematicum}, pages = {581--594}, publisher = {mathdoc}, volume = {3}, number = {2}, year = {1991}, zbl = {0759.20011}, url = {http://geodesic.mathdoc.fr/item/FORUM_1991__3_2_186408/} }
J.C. BEIDLEMAN; D.J.S. ROBINSON. On the Structure of the Normal Subgroups of a Group: Nilpotency.. Forum mathematicum, Tome 3 (1991) no. 2, pp. 581-594. http://geodesic.mathdoc.fr/item/FORUM_1991__3_2_186408/