Kalani, H., & Davoodi, S. M. R. (2024). Reducing Environmental Pollutions in Closed-loop Supply Chain Optimization through Fuzzy Complex Integer Programming. International Journal of Industrial Engineering and Operational Research, 6(2), 32-48. Retrieved from https://bgsiran.ir/journal/ojs-3.1.1-4/index.php/IJIEOR/article/view/86