TEAM, S. On Connected Cayley Graphs of Semigroups: T. Suksumran, S. Panma. Thai Journal of Mathematics, [S. l.], v. 13, n. 3, p. 641–652, 2015. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/538. Acesso em: 15 may. 2024.