?url_ver=Z39.88-2004&rft_id=10.2118%2F140960-PA&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=El-Khatib%2C+N.A.F.&rft.aulast=El-Khatib&rft.aufirst=N.A.F.&rft.title=SPE+Journal&rft.date=2012&rft.volume=17&rft.issn=1086055X&rft.issue=4&rft.pages=1029-1040&rft.atitle=The+modification+of+the+Dykstra-parsons+method+for+inclined+stratified+reservoirs&rft.genre=article