%0 Journal Article %A A. Guessab %T Numerical Curvature Formulae with Preassigned Knots. %J Numerische Mathematik %D 1987 %P 467-478 %V 52 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1987__52_5_133247/ %F NUMA_1987__52_5_133247