J.G. Snel, H.K.Venema, T.M.Moojen, M.Ritt, C.A.Grimbergen, and G.J. den Heeten. Quantitative In Vivo analysis of the kinematics of carpal bones from 3D CT images using a deformable surface model and a 3D matching technique . Med. Phys., 27(9):2037-2047, September 2000. (pdf) (bibtex: Snel-2000-QIV).