?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.molliq.2020.114888&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=D.Y.&rft.au=Atta%2C+D.Y.&rft.aulast=Atta&rft.date=2021&rft.title=Journal+of+Molecular+Liquids&rft.atitle=A+state-of-the-art+review+on+the+application+of+natural+surfactants+in+enhanced+oil+recovery&rft.volume=321&rft.issn=01677322&rft.genre=article