Guo, W., Skiba, A. N. and Shum, K. P. (2006) “$X$-permutable maximal subgroups of Sylow subgroups of finite groups”, Ukrains’kyi Matematychnyi Zhurnal, 58(10), pp. 1299–1309. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3533 (Accessed: 9February2023).