Borodich, R. V. “On the Crossing of Maximal Subgroups of Finite Groups”. Ukrains’kyi Matematychnyi Zhurnal 71, no. 11 (November 25, 2019): 1455-1465. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1528.