Decision Support System Based on Spherical 2-tuple Linguistic Fuzzy Aggregation Operators and their Application in Green Supplier Selection. Punjab Univ. J. Math. [Internet]. 2025 May 12 [cited 2025 Jun. 29];54(6):411-28. Available from: https://pujm.pu.edu.pk/index.php/pujm/article/view/227