?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.egypro.2014.12.047&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Hagos&rft.au=Hagos%2C+F.Y.&rft.aufirst=F.Y.&rft.issn=18766102&rft.date=2014&rft.title=Effect+of+air-fuel+ratio+on+the+combustion+characteristics+of+syngas+(H2%3ACO)+in+direct-injection+spark-ignition+engine&rft.genre=proceeding