%0 Journal Article %A Zelený, Miroslav %T An example of a $\Cal C^{1,1}$ function, which is not a d.c. function %J Commentationes Mathematicae Universitatis Carolinae %D 2002 %P 149-154 %V 43 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2002__43_1_a11/ %G en %F CMUC_2002__43_1_a11