PRASERTPONG, R. .; BUADA, S. . Rough Interior Ideals and Rough Quasi-Ideals in Approximation Spaces of Semigroups under Preorder and Compatible Relations. Suan Sunandha Science and Technology Journal, Bangkok, Thailand, v. 8, n. 1, p. 21–26, 2022. Disponível em: https://li02.tci-thaijo.org/index.php/ssstj/article/view/381. Acesso em: 3 may. 2024.