SARIKA M NAIR; R. AKHILA. Ideal Extension and Idempotents of a Rees Matrix Semigroup. International Journal of Mathematics And its Applications, [S. l.], v. 7, n. 4, p. 47–52, 2019. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/204. Acesso em: 1 may. 2024.