Ayat. Ahmed. Farhan, Alaa. M. F. AL. Jumaili. “Other Generalized Forms of Separation Axioms in Topological Spaces via E-Open and δ-ß-Open Sets”. PalArch’s Journal of Archaeology of Egypt / Egyptology 17, no. 9 (November 4, 2020): 3887 - 3903. Accessed December 22, 2024. https://archives.palarch.nl/index.php/jae/article/view/4518.