A. V. Izosov and N. F. . Sesekin, “Groups with the finite number of infinite classes of conjugated subgroups”, Ukr. Mat. Zhurn., vol. 40, no. 3, pp. 310–314, Apr. 1988, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/9140