TY - JOUR AU - L. Zajícek TI - Differentiability of Approximately Convex, Semiconcave and Strongly Paraconvex Functions JO - Journal of convex analysis PY - 2008 SP - 1 EP - 15 VL - 15 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCA_2008_15_1_JCA_2008_15_1_a0/ ID - JCA_2008_15_1_JCA_2008_15_1_a0 ER -