Hussan, Mohammed Salih Mahdy, and Munir Abdul Khalik AL-Khafaji. “A Type-2 Fuzzy Sonewhere Dense Set In General Type-2 Fuzzy Topological Space”. Iraqi Journal of Science (May 17, 2020): 21–27. Accessed January 3, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/1964.