Groups with the N-invariance condition for noncyclic subgroups
English version (Springer): Ukrainian Mathematical Journal 36 (1984), no. 6, pp 590-593.
Citation Example: Marach V. S. Groups with the N-invariance condition for noncyclic subgroups // Ukr. Mat. Zh. - 1984. - 36, № 6. - pp. 777 – 780.
Full text