?url_ver=Z39.88-2004&rft_id=10.3923%2Fjas.2011.1827.1832&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=N.N.&rft.au=al-Khairi%2C+N.N.&rft.aulast=al-Khairi&rft.date=2011&rft.title=Journal+of+Applied+Sciences&rft.atitle=Comparison+of+HCCI+and+SI+characteristics+on+low+load+CNG-DI+combustion&rft.pages=1827-1832&rft.issue=10&rft.volume=11&rft.issn=18125654&rft.genre=article