@article{TVP_2007_52_2_a3,
     author = {M. E. Shirokov},
     title = {On properties of quantum channels related to their classical capacity},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {301--335},
     publisher = {mathdoc},
     volume = {52},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_2007_52_2_a3/}
}