ALGADID, Y. .; HANNUN, W. . On some finitely generated subsemigroups of S(X). Journal of Humanitarian and Applied Sciences , [S. l.], v. 5, n. 9, p. 135–138, 2020. Disponível em: https://khsj.elmergib.edu.ly/index.php/jhas/article/view/355. Acesso em: 3 jul. 2024.