[1]
F. M. Zakirov and A. A. Rakhimov, “Strong base for fuzzy topology”, MFAT, vol. 17, no. 4, pp. 350–355, Dec. 2011, Accessed: Feb. 04, 2026. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/499