%0 Journal Article %A Fefferman, C. %T Extension of C^{m, \omega}-Smooth Functions by Linear Operators. %J Revista matemática iberoamericana %D 2009 %P 1-48 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RMI_2009_2009_1_a0/ %G en %F RMI_2009_2009_1_a0