?url_ver=Z39.88-2004&rft_id=10.1007%2Fs12239-017-0009-5&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=G.T.&rft.aulast=Chala&rft.au=Chala%2C+G.T.&rft.title=International+Journal+of+Automotive+Technology&rft.issue=1&rft.atitle=Combined+effect+of+boost+pressure+and+injection+timing+on+the+performance+and+combustion+of+CNG+in+a+DI+spark+ignition+engine&rft.pages=85-96&rft.volume=18&rft.date=2017&rft.issn=12299138&rft.genre=article