Al-Badry, Ayed .E. Hashoosh. “PRE-ALEXANDROFF SPACE”. University of Thi-Qar Journal of Science 3, no. 4 (June 28, 2013): 150–155. Accessed May 12, 2025. http://www.jsci.utq.edu.iq/index.php/main/article/view/532.