Hameed, Najlae, and Mohammed Abid. “CERTAIN TYPES OF SEPARATION AXIOMS IN TRI-TOPOLOGICALSPACES”. Iraqi Journal of Science 52, no. 2 (May 30, 2024): 212–217. Accessed December 7, 2025. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/13465.