Arora, Hari Darshan, Vijay Kumar, and Anjali Naithani. “ Impact of Trigonometric Similarity Measures for Pythagorean Fuzzy Sets and Their Applications”. Yugoslav Journal of Operations Research 34, no. 3 (February 8, 2024): 569–586. Accessed July 28, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/800.