?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.renene.2019.03.036&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Ahmad&rft.au=Ahmad%2C+T.&rft.aufirst=T.&rft.volume=139&rft.date=2019&rft.pages=1272-1280&rft.title=Renewable+Energy&rft.issn=09601481&rft.atitle=Optimization+of+process+variables+for+biodiesel+production+by+transesterification+of+flaxseed+oil+and+produced+biodiesel+characterizations&rft.genre=article