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This is to certify that your paper entitled «Electromagnetic Interference to Buried Gas Pipelines Due to Nearby Electric Railway Systems» was indexed with 3 pages, in the CIVILICA citation database, code COI:EMFE01_012, after evaluation and approval of the referees of the "The first conference to study the effects of electromagnetic fields on living tissues and electrical and electronic equipment held in Tehran 2008.

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.