LAYSIRIKUL, E.; SAWATRAKSA, N.; NAMNAK, C. Left regular and right regular elements of the semigroups of transformations restricted by an equivalence. Asian Health, Science and Technology Reports, [S. l.], v. 26, n. 4, p. 89–93, 2018. DOI: 10.14456/nujst.2018.25. Disponível em: https://ph03.tci-thaijo.org/index.php/ahstr/article/view/1638. Acesso em: 12 dec. 2025.