[1]
O. Y. Dashkova, “Hypercentral groups of finite subnormal rank”, Ukr. Mat. Zhurn., vol. 47, no. 11, pp. 1577–1580, Nov. 1995, Accessed: Apr. 09, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5550