Danh, L.Q., and T.T. Deo. “A Note on Normal Maximal Subgroups in Mal’cev-Neumann Division Rings”. Carpathian Mathematical Publications 16, no. 2 (December 29, 2024): 587–592. Accessed January 15, 2025. https://journals.pnu.edu.ua/index.php/cmp/article/view/6167.