Majeed, R. N., and S. A. El-Sheikh. “Separation Axioms in Topological Ordered Spaces Via B-Open Sets”. Iraqi Journal of Science 62, no. 8 (August 31, 2021): 2685–2693. Accessed January 3, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/3049.