?url_ver=Z39.88-2004&rft_id=10.1051%2Fmatecconf%2F201822506023&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=S.A.B.A.&rft.aulast=Karim&rft.au=Karim%2C+S.A.B.A.&rft.date=2018&rft.title=Visualization+Terrain+Data+Using+Cubic+Ball+Triangular+Patches&rft.issn=2261236X&rft.genre=proceeding