Mondal, M.K., B.S. Mahapatra, Pinaki Pratim Acharjya, and M.B. Bera. “Green Suppliers Selection through Extended Pythagorean Fuzzy WASPAS Approach”. Research Updates in Mathematics and Computer Science Vol. 8 (June 11, 2024): 90–106. Accessed June 13, 2026. https://stm.bookpi.org/RUMCS-V8/article/view/14900.