Semko, M. M.; Kuchmenko, S. M.
(Луганский национальный университет им. Т. Шевченко, 2004)
A subgroup H of a group G is said to be nearly
normal, if H has a finite index in its normal closure. These sub-
groups have been introduced by B.H. Neumann. In a present paper
is studied the groups whose non polycyclic ...