%0 Journal Article %A L. Zajícek %T Differentiability of Approximately Convex, Semiconcave and Strongly Paraconvex Functions %J Journal of convex analysis %D 2008 %P 1-15 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2008_15_1_JCA_2008_15_1_a0/ %F JCA_2008_15_1_JCA_2008_15_1_a0