Riad K. Al-Hamido, T. Gharibah, S. Jafari, and Florentin Smarandache, “On Neutrosophic Crisp Topology via N-Topology”, Neutrosophic Sets Syst., vol. 23, pp. 96–109, Dec. 2018, Accessed: Apr. 25, 2025. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/3954