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This is to certify that your paper entitled «Determination of a formula for the interpolation of experimental results for determining appropriate starting values for the estimation of the model parameters of the Cam-Clay behavioral model» was indexed with 10 pages, in the CIVILICA citation database, code COI:CAUCONF01_0070, after evaluation and approval of the referees of the "Conference on Civil Engineering, Architecture and Urban Planning of the Islamic World held in Tabriz 2018.

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.