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This is to certify that your paper entitled «Contrasting Compression Refrigeration System with Absorption Refrigeration System inthe vehicle and analysis of effective factors on COP» was indexed with 2 pages, in the CIVILICA citation database, code COI:ISME25_193, after evaluation and approval of the referees of the "25th Annual Conference of Mechanical Engineering held in Tehran 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.