Narmada Ranarahu , Babita Chaini,. “A Ranking Method for Solving Type-2 Fuzzy Unbalanced Transportation Problem Using the Triangular Fuzzy Number”. Design Engineering (November 2, 2021): 9362-9373. Accessed April 29, 2024. http://www.thedesignengineering.com/index.php/DE/article/view/5978.