Mondal, Animesh, Jana Ranjan Kumar, and Jana Dipak Kumar. “ Decision Making in Fuzzy Closed Loop Dual Channel Supply Chain”. Yugoslav Journal of Operations Research 34, no. 1 (May 30, 2023): 23–50. Accessed July 28, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/769.