?url_ver=Z39.88-2004&rft_id=10.2474%2Ftrol.18.18&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Opia%2C+A.C.&rft.aulast=Opia&rft.aufirst=A.C.&rft.issn=1881218X&rft.atitle=A+Review+on+bio-lubricants+as+an+alternative+green+product%3A+Tribological+performance%2C+mechanism%2C+challenges+and+future+opportunities&rft.title=Tribology+Online&rft.date=2023&rft.pages=18-33&rft.volume=18&rft.issue=2&rft.genre=article