?url_ver=Z39.88-2004&rft_id=10.4028%2Fwww.scientific.net%2FAMM.663.64&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Ayandotun&rft.au=Ayandotun%2C+W.B.&rft.aufirst=W.B.&rft.volume=663&rft.date=2014&rft.pages=64-70&rft.title=Applied+Mechanics+and+Materials&rft.isbn=9783038352617&rft.issn=16609336&rft.atitle=The+effect+of+high+carbon+dioxide+content+on+the+performance+and+emission+characteristics+of+a+Direct+Injection+(DI)+compressed+natural+gas+engine&rft.genre=article