ALGHAZZAWI, Dilshad. Reversible elements in rings. Journal of Algebra Combinatorics Discrete Structures and Applications, [S. l.], v. 4, n. 2, p. 219–225, 2017. Disponível em: https://www.jacodesmath.com/index.php/jacodesmath/article/view/71. Acesso em: 12 sep. 2026.