Talafha, Mohammad, Syahida Che Dzul-Kifli, Abd Ulazeez Alkouri, and Eman Hussein. “On the Theory of Hesitant Fuzzy Functions and Their Reduction to Fuzzy and Intuitionistic Fuzzy Function Models”. Journal of Quality Measurement and Analysis 22, no. SI (May 31, 2026): 351–379. Accessed August 17, 2026. https://jqma.ukm.my/index.php/jqma/article/view/246.