M. Alkan and Ӧneş O., “The radical formula for noncommutative rings”, Ukr. Mat. Zhurn., vol. 71, no. 9, pp. 1241–1248, Sep. 2019, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1512