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@article{DM_1990_2_1_a15, author = {N. N. Sharov}, title = {Upper bounds for the capacity of discrete communication channels}, journal = {Diskretnaya Matematika}, pages = {155--157}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_1990_2_1_a15/} }
N. N. Sharov. Upper bounds for the capacity of discrete communication channels. Diskretnaya Matematika, Tome 2 (1990) no. 1, pp. 155-157. http://geodesic.mathdoc.fr/item/DM_1990_2_1_a15/