TY - JOUR AU - A. S. Holevo TI - Excessive maps, ``arrival times'' and perturbation of dynamical semigroups JO - Izvestiya. Mathematics PY - 1995 SP - 1311 EP - 1325 VL - 59 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1995_59_6_a9/ LA - en ID - IM2_1995_59_6_a9 ER -