Kaymakci, Aynur Keskin, Wan Aunin Mior Othman, and Cenap Ozel. “ON PARTIALLY TOPOLOGICAL GROUPS: EXTENSION CLOSED PROPERTIES”. Italian Journal of Pure and Applied Mathematics 40 (July 31, 2018): 82–89. Accessed October 17, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/7055.