KovalТ. V. (2000) “Groups Proper Nonmaximal Subgroups of Which Are Cyclic or Minimal Noncyclic”, Ukrains’kyi Matematychnyi Zhurnal, 52(12), pp. 1708-1710. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4574 (Accessed: 22November2024).