?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.fuel.2021.122234&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Umar%2C+H.A.&rft.aulast=Umar&rft.aufirst=H.A.&rft.title=Fuel&rft.volume=310&rft.atitle=Parametric+optimisation+through+the+use+of+Box-Behnken+design+in+the+Co-gasification+of+oil+palm+trunk+and+frond+for+syngas+production&rft.issn=00162361&rft.date=2022&rft.genre=article