TY - JOUR AU - T. Ando TI - Comparison of Norms |||f (A) - f(B) ||| and |||f (|A - B|) |||. JO - Mathematische Zeitschrift PY - 1988 SP - 403 EP - 410 VL - 197 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1988__197_1_183741/ ID - MZ_1988__197_1_183741 ER -