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This is to certify that your paper entitled «Highly purified hydrogen Obtained by using a composite SiO2-Al2O3 membrane at high operating temperatures» was indexed with 4 pages, in the CIVILICA citation database, code COI:H2FC02_009, after evaluation and approval of the referees of the "Second National Conference on Hydrogen and Fuel Cells held in Tehran 2012.

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.