TEAM, S. Natural Partial Order on the Semigroups of Partial Isometries of a Finite Chain: Chaiwat Namnak, Ekkachai Laysirikul, Nares Sawatraksa. Thai Journal of Mathematics, [S. l.], p. 97–108, 2023. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/760. Acesso em: 20 may. 2024.