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Closed-Loop Green Supply Chain Logistics Model with Uncertain Reverse Pameters

Due to the problem on global warming, green supply chain management, in particular, logistics, has drawn the attention of researchers. Although there were closed-loop green logistics models appeared in the literatures, most of them did not consider the uncertain environment in general terms. In this study, a generalized model was proposed when the uncertainty is expressed by fuzzy and interval numbers. A solution procedure was developed and illustrated by a numerical example. The resultant solution provides useful information of the expected solution under a confidence level.