Rashed Yassein, Hassan, and Mazen Omran Karim. “On Smarandache M-Semigroup”. Journal of Al-Qadisiyah for Computer Science and Mathematics, vol. 3, no. 1, Sept. 2017, pp. 71-76, https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/241.