Saha, Parbati, Shantanu Guria, and Binayak S. Choudhury. “Determining Fuzzy Distance through Non-Self Fuzzy Contractions”. Yugoslav Journal of Operations Research 29, no. 3 (August 1, 2019): 325–335. Accessed August 25, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/575.