P. Thangaraja, A. Vadivel, and C. John Sundar, “e-OpenMaps, e-ClosedMaps and e-Homeomorphisms in n-Neutrosophic Crisp Topological Spaces”, Neutrosophic Sets Syst., vol. 60, pp. 287–299, Dec. 2023, Accessed: Jul. 16, 2024. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/3765