Kreknin, V. A., and I. I. Mel'nik. “Sufficient Conditions for the Complementability of Maximal Cyclic Subgroups in a Finite 2-Group”. Ukrains’kyi Matematychnyi Zhurnal 46, no. 11 (November 25, 1994): 1572–1575. Accessed December 6, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/5598.