%0 Journal Article %A Fefferman, C. %T Fitting a $C^m$-Smooth Function to Data II. %J Revista matemática iberoamericana %D 2009 %P 49-273 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RMI_2009_2009_1_a1/ %G en %F RMI_2009_2009_1_a1