?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.jksus.2018.12.001&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Said+Solaiman%2C+O.&rft.aufirst=O.&rft.aulast=Said+Solaiman&rft.issn=10183647&rft.pages=1499-1504&rft.issue=4&rft.date=2019&rft.atitle=Optimal+fourth-+and+eighth-order+of+convergence+derivative-free+modifications+of+King's+method&rft.title=Journal+of+King+Saud+University+-+Science&rft.volume=31&rft.genre=article