?url_ver=Z39.88-2004&rft_id=10.1166%2Fasl.2015.6247&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K.&rft.aulast=Hassan&rft.au=Hassan%2C+K.&rft.title=Advanced+Science+Letters&rft.date=2015&rft.issue=6&rft.volume=21&rft.issn=19366612&rft.atitle=Modeling+the+economic+impacts+of+oil+production+in+sudan%3A+An+empirical+analysis+for+productive+sectors&rft.pages=2166-2168&rft.genre=article