Bala, Rajni. “G-$\mathcal{H}$-Regular and G-$\mathcal{H}$-Normal Hereditary Spaces”. International Journal of Maps in Mathematics 7, no. 2 (September 1, 2024): 273–283. Accessed March 11, 2025. https://simadp.com/journalmim/article/view/7-2-10.