\input zb-basic \input zb-ioport \iteman{io-port 05331262} \itemau{Blinn, James F.} \itemti{How to solve a cubic equation, part 3: General depression and a new covariant.} \itemso{IEEE Computer Graphics and Applications 26, No. 06, 92-102 (2006).} \itemab Summary: Jim Blinn continues his discussion on solving cubic equations. \itemrv{~} \itemcc{} \itemut{blinn; cubic equations} \itemli{doi:10.1109/MCG.2006.129} \end