Shakeel, M., Rahman, K., Khan, M. A., & Ullah, M. (2017). Induced Averaging Aggregation Operators with Interval Pythagorean Trapezoidal Fuzzy Numbers and their Application to Group Decision Making. The Nucleus, 54(2), 140–153. Retrieved from http://202.83.167.189/index.php/Nucleus/article/view/112