?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.energy.2015.07.031&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=F.Y.&rft.aulast=Hagos&rft.au=Hagos%2C+F.Y.&rft.date=2015&rft.pages=2006-2015&rft.volume=90&rft.issn=03605442&rft.atitle=Methane+enrichment+of+syngas+(H2%2FCO)+in+a+spark-ignition+directinjection+engine%3A+Combustion%2C+performance+and+emissions+comparison+with+syngas+and+Compressed+Natural+Gas&rft.title=Energy&rft.genre=article