TY - JOUR AU - A. S. Holevo TI - Mathematical problems in the theory of quantum channels JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1975 SP - 226 EP - 227 VL - 135 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1975_135_a27/ LA - ru ID - TM_1975_135_a27 ER -