MOHAMMED, Sajda Kadhum. Some Results on Smarandache Semigroups. Journal of Kufa for Mathematics and Computer, Kufa, Najaf, IRAQ, v. 1, n. 7, p. 33–36, 2013. DOI: 10.31642/JoKMC/2018/010704. Disponível em: https://journal.uokufa.edu.iq/index.php/jkmc/article/view/2200. Acesso em: 27 may. 2026.