?url_ver=Z39.88-2004&rft_id=10.3390%2Fen14144081&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Bashir%2C+A.&rft.aufirst=A.&rft.aulast=Bashir&rft.atitle=Impact+of+combustion+variance+on+sustainability+of+free-piston+linear+generator+during+steady-state+generation&rft.title=Energies&rft.date=2021&rft.issue=14&rft.issn=19961073&rft.volume=14&rft.genre=article