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This is to certify that your paper entitled «Investigation of strain, strain inhomogeneity and required force in ECAP with square cross section using numerical and analytical modeling» was indexed with 6 pages, in the CIVILICA citation database, code COI:IMES07_187, after evaluation and approval of the referees of the "The second International and the Seventh Joint Conference of Iranian Metallurgical Engineering and Iranian Foundaryman Scintific Societies held in Semnan 2013.

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.