D. AL– Khafajy and A. Sadek, “On D- Compact Topological Groups”, Iraqi Journal of Science, vol. 54, no. 3. Mathematics conf, pp. 842–846, Feb. 2024, Accessed: Jan. 07, 2026. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12501