Shakeel, M., K. Rahman, M.S. A. Khan, and Murad Ullah. “Induced Averaging Aggregation Operators With Interval Pythagorean Trapezoidal Fuzzy Numbers and Their Application to Group Decision Making”. The Nucleus 54, no. 2 (June 30, 2017): 140–153. Accessed November 22, 2024. http://202.83.167.189/index.php/Nucleus/article/view/112.