P. Sivagami, M. Padmavathi, and G. Hari Siva Annam. “\(\mu\)-Pre\(^{*}\)- Closed Sets in Generalized Topological Spaces”. Malaya Journal of Matematik 8, no. 03 (July 1, 2020): 1331–1336. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/1611.