Asi Elad (Elbaz) Ron Kimmel On Bending Invariant Signatures for Surfaces. 1285-1295 2003 25 IEEE Trans. Pattern Anal. Mach. Intell. 10 http://doi.ieeecomputersociety.org/10.1109/TPAMI.2003.1233902 db/journals/pami/pami25.html#ElbazK03