MonakhovV. S., and SokhorI. L. “Finitely Solvable Groups With Nilpotent Wide Subgroups”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 7 (July 25, 2016): 957-962. Accessed November 21, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1893.