Kashyap G. Rachchh, and Sajeed I. Ghanchi. “On Kasaj Topological Spaces”. Malaya Journal of Matematik 8, no. 04 (January 1, 2020): 1766–1770. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/1744.