AL-DULAIMI, S. J. .; HAMEED, M. I. .; IBRAHIM, I. A. .; JOSHUA, H. . On the Investigation of Derivation Pairs in Relation to Semi-Rings . Migration Letters, London, UK, v. 20, n. 6, p. 113–117, 2023. DOI: 10.59670/ml.v20i6.3465. Disponível em: https://migrationletters.com/index.php/ml/article/view/3465. Acesso em: 22 nov. 2024.