TEAM, S. Green’s Relations and Natural Partial Order on the Regular Subsemigroup of Transformations Preserving an Equivalence Relation and Fixed a Cross-Section: Nares Sawatraksa, Chaiwat Namnak, Kritsada Sangkhanan. Thai Journal of Mathematics, [S. l.], v. 17, n. 2, p. 431–444, 2019. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/902. Acesso em: 8 may. 2024.