Gaze Salih Al-Khafajy, D., and M. Abdulridha Mutar. “On DM- Compact Smarandache Topological Semigroups”. Journal of Al-Qadisiyah for Computer Science and Mathematics, Vol. 8, no. 2, Aug. 2017, pp. 25-33, http://www.qu.edu.iq/journalcm/index.php/journalcm/article/view/30.