Zhao, Mailing, and Jun Ye. “MADM Technique Using Tangent Trigonometric SvNN Aggregation Operators for the Teaching Quality Assessment of Teachers”.
Neutrosophic Sets and Systems 50 (June 1, 2022): 651–662. Accessed January 6, 2025.
https://fs.unm.edu/nss8/index.php/111/article/view/2550.