?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.energy.2019.116098&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Cheng&rft.au=Cheng%2C+S.W.Y.&rft.aufirst=S.W.Y.&rft.atitle=Optimization+of+geothermal+energy+extraction+from+abandoned+oil+well+with+a+novel+well+bottom+curvature+design+utilizing+Taguchi+method&rft.volume=188&rft.issn=03605442&rft.date=2019&rft.title=Energy&rft.genre=article