TEAM, S. On the Least (Ordered) Semilattice Congruence in Ordered $\Gamma$-Semigroups: M. Siripitukdet, A. Iampan. Thai Journal of Mathematics, [S. l.], v. 4, n. 2, p. 403–415, 2006. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/60. Acesso em: 3 may. 2024.