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This is to certify that your paper entitled «The Role of Supply Chain in Demand Forecasting and Comparison of the Current and Desired State in the Iranian Book Printing and Publishing Industry» was indexed with 10 pages, in the CIVILICA citation database, code COI:DEA16_197, after evaluation and approval of the referees of the "16th International Conference on Data Envelopment Analysis and Decision Science held in Tonekabon 2025.

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 conference 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.