Nguyen, Huu Hoc, Thi Thu Nguyen, and Tran Nam Anh Bui. “HYERS–ULAM STABILITY, WELL-POSEDNESS, AND DATA DEPENDENCE FOR FISHER-TYPE CONTRACTIVE MAPPINGS”. Hong Duc University Journal of Science, no. 7 (July 30, 2026): 39-50. Accessed October 8, 2026. https://hdujs.edu.vn/index.php/js/article/view/1127.