Chernikov, N. S. (2000) “On finite solvable groups decomposable into the product of two nilpotent subgroups”, Ukrains’kyi Matematychnyi Zhurnal, 52(6), pp. 809–819. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4475 (Accessed: 12May2024).