?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Fosu-Duah%2C+E.&rft.aulast=Fosu-Duah&rft.aufirst=E.&rft.date=2018&rft.title=Petroleum+and+Coal&rft.atitle=VARIATIONS+IN+SURFACE+POTENTIAL+CHARACTERISTICS+OF+SELECTED+SHALES+FROM+CENTRAL+LUCONIA%2C+OFFSHORE+SARAWAK-+MALAYSIA&rft.pages=244-254&rft.issue=2&rft.volume=60&rft.issn=13377027&rft.genre=article