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This is to certify that your paper entitled «A new interval-valued fuzzy optimization model for truck scheduling in a multi-door cross-docking system by considering transshipment and flexible dock doors extra cost» was indexed with 22 pages, in the CIVILICA citation database, code COI:JR_IJFS-20-6_004, after evaluation and approval of the referees of the "Iranian Journal of Fuzzy Systems Vol 20, Issue 6 , Year 2023.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above journal and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.