@article{PDMA_2016_9_a24,
     author = {N. V. Medvedeva and S. S. Titov},
     title = {Analogues of the {Shannon} theorem for non-minimal endomorphic perfect ciphers},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {62--65},
     publisher = {mathdoc},
     number = {9},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2016_9_a24/}
}