Groups in which all subgroups are pronormal
English version (Springer): Ukrainian Mathematical Journal 39 (1987), no. 3, pp 251-254.
Citation Example: Kuzennyi N. F., Subbotin I. Ya. Groups in which all subgroups are pronormal // Ukr. Mat. Zh. - 1987. - 39, № 3. - pp. 325–329.
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