Takaaki Fujita, and Florentin Smarandache. 2025. “A Concise Introduction to HyperFuzzy, HyperNeutrosophic, HyperPlithogenic, HyperSoft, and HyperRough Sets With Practical Examples”. Neutrosophic Sets and Systems 80 (March): 609-31. https://fs.unm.edu/nss8/index.php/111/article/view/5764.