Gatalevych, A.I., and A.A. Dmytruk. “A Bezout Ring With Nonzero Principal Jacobson Radical”. Carpathian Mathematical Publications 14, no. 1 (April 27, 2022): 72–75. Accessed November 22, 2024. https://vps.pnu.edu.ua/index.php/cmp/article/view/4765.