@article{MAT_1961_5_3_a5,
     author = {D. Blackwell},
     title = {Infinite codes for memoryless channels},
     journal = {Matematika},
     pages = {151--154},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1961_5_3_a5/}
}