Kuzennyi, N. F., and S. V. Maznichenko. “Structure of Certain Classes of Groups With Locally Cyclic Abelian Subgroups”. Ukrains’kyi Matematychnyi Zhurnal 51, no. 12 (December 25, 1999): 1614–1627. Accessed April 27, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4766.