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@article{IVM_1990_3_a12, author = {F. N. Liman}, title = {Infinite groups, all of whose infinite $pd$-subgroups are normal}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {75--78}, publisher = {mathdoc}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1990_3_a12/} }
F. N. Liman. Infinite groups, all of whose infinite $pd$-subgroups are normal. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1990), pp. 75-78. http://geodesic.mathdoc.fr/item/IVM_1990_3_a12/