A. M. Khattak, “A Characterization of Soft Semi Separation Axioms in Soft Quad Topological Spaces”, Iraqi Journal of Science, vol. 59, no. 1C, pp. 552–563, Mar. 2018, Accessed: Dec. 21, 2025. [Online]. Available: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/26