%0 Journal Article %A Delladio, Silvano %T A Sufficient Condition for the $C^2$-Rectifiability of the Set of Regular Values (in the Sense of Clarke) of a Lipschitz Map %J Bollettino della Unione matematica italiana %D 2008 %P 695-707 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/BUMI_2008_9_1_3_a9/ %G en %F BUMI_2008_9_1_3_a9