TY - JOUR AU - V. N. Solov'ev TI - The subdifferential and the directional derivatives of the maximum of a~family of convex functions JO - Izvestiya. Mathematics PY - 1998 SP - 807 EP - 832 VL - 62 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1998_62_4_a6/ LA - en ID - IM2_1998_62_4_a6 ER -