Some Interval-Valued Pythagorean Fuzzy Weighted Averaging Aggregation Operators and Their Application to Multiple Attribute Decision Making. Punjab Univ. J. Math. [Internet]. 2018 Jun. 30 [cited 2025 Jun. 28];50(2):109-25. Available from: https://pujm.pu.edu.pk/index.php/pujm/article/view/133