Gaze Salih Al-Khafajy, Dheia, and Mohammed Abdulridha Mutar. “On DM- Compact Smarandache Topological Semigroups”. Journal of Al-Qadisiyah for computer science and mathematics 8, no. 2 (August 7, 2017): 25-33. Accessed August 30, 2021. http://www.qu.edu.iq/journalcm/index.php/journalcm/article/view/30.