TY - JOUR AU - E. Girejko AU - D. Mozyrska AU - M. Wyrwas TI - Contingent Epiderivatives of Functions on Time Scales JO - Journal of convex analysis PY - 2011 SP - 1047 EP - 1064 VL - 18 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCA_2011_18_4_JCA_2011_18_4_a7/ ID - JCA_2011_18_4_JCA_2011_18_4_a7 ER -