J. Antony Rex Rodrigo, O. Ravi, and A. Naliniramalatha, “$\hat{g}$-closed sets in ideal topological spaces”, MFAT, vol. 17, no. 3, pp. 274–280, Sep. 2011, Accessed: Feb. 04, 2026. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/492