TY - JOUR AU - Deville, Robert TI - A Mean Value Theorem for non Differentiable Mappings in Banach Spaces JO - Serdica Mathematical Journal PY - 1995 SP - 59 EP - 66 VL - 21 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SMJ2_1995_21_1_a3/ LA - en ID - SMJ2_1995_21_1_a3 ER -