?url_ver=Z39.88-2004&rft_id=10.3923%2Fjas.2012.2368.2375&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=F.Y.&rft.au=Hagos%2C+F.Y.&rft.aulast=Hagos&rft.volume=12&rft.date=2012&rft.pages=2368-2375&rft.issue=23&rft.title=Journal+of+Applied+Sciences&rft.issn=18125654&rft.atitle=Combustion+characteristics+of+late+injected+CNG+in+a+spark+ignition+engine+under+lean+operating+condition&rft.genre=article