Fujita, Takaaki. “The Hyperfuzzy VIKOR and Hyperfuzzy DEMATEL Methods for Multi-Criteria Decision-Making”. Spectrum of Decision Making and Applications 3, no. 1 (January 1, 2026): 292–315. Accessed January 23, 2026. http://dmap-journal.org/index.php/dmap/article/view/54.