ZuzukL. I. “Construction of Nonnilpotent Biprimary Dispersible Groups With Metacyclic Subgroups of Nonprimary Index”. Ukrains’kyi Matematychnyi Zhurnal 49, no. 6 (June 25, 1997): 849–851. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5071.