A. F. Vasil'ev, “On Abnormally Factorizable Finite Solvable Groups”, Ukr. Mat. Zhurn., vol. 54, no. 9, pp. 1163–1171, Sep. 2002, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4156