Salama, A.A., I.M. Hanafy, Hewayda Elghawalby, and M.S. Dabash. “Neutrosophic Crisp α-Topological Spaces”. Neutrosophic Sets and Systems 12 (June 15, 2016): 92–96. Accessed November 23, 2024. https://fs.unm.edu/nss8/index.php/111/article/view/681.