Y Abbas, Muna, and Sabih W. Askandar. “Generalized αii-Closed Sets in Ordinary Topological Spaces”. Journal of Education and Science 34, no. 1 (January 1, 2025): 67–74. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/49327.