TEAM, S. Certain Regular Semigroups of Infinite Matrices: S. Pianskool, P. Lertwichitsilp, K. Savettaraseranee. Thai Journal of Mathematics, [S. l.], v. 4, n. 3, p. 1–5, 2006. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/61. Acesso em: 3 may. 2024.