TY - JOUR AU - Tosio Kato TI - Superconvexity of the Spectral Radius, and Convexity of the Spectral Bound and the Type. JO - Mathematische Zeitschrift PY - 1982 SP - 265 EP - 274 VL - 180 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1982__180_173187/ ID - MZ_1982__180_173187 ER -