W. Guo, A. N. Skiba, and K. P. Shum, “$X$-permutable maximal subgroups of Sylow subgroups of finite groups”, Ukr. Mat. Zhurn., vol. 58, no. 10, pp. 1299–1309, Oct. 2006, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3533