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This is to certify that your paper entitled «A MATHEMATICAL METHOD TO INVESTIGATE DIFFERENT PROFILES ON DEFORMATION OF CYLINDRICAL SHELLS WITH VARIABLE THICKNESS» was indexed with 6 pages, in the CIVILICA citation database, code COI:MAEMT02_010, after evaluation and approval of the referees of the "The second national conference Math: Advanced Engineering Mathematics with techniques held in Urmia 2017.

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.