?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.ijhydene.2021.10.125&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Raheem%2C+A.T.&rft.aufirst=A.T.&rft.aulast=Raheem&rft.date=2022&rft.atitle=Optimisation+of+operating+parameters+on+the+performance+characteristics+of+a+free+piston+engine+linear+generator+fuelled+by+CNG%C3%A2%EF%BF%BD%EF%BF%BDH2+blends+using+the+response+surface+methodology+(RSM)&rft.title=International+Journal+of+Hydrogen+Energy&rft.issn=03603199&rft.pages=1996-2016&rft.issue=3&rft.volume=47&rft.genre=article