V. A. Vedernikov, “On New Types of ω-Fibered Fitting Classes of Finite Groups”, Ukr. Mat. Zhurn., vol. 54, no. 7, pp. 897–906, Jul. 2002, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4126