@article{VSGU_2016_1-2_a4,
     author = {S. M. Ratseev and V. M. Ratseev},
     title = {On perfect imitation resistant ciphers based on combinatorial objects},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {46--50},
     publisher = {mathdoc},
     number = {1-2},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2016_1-2_a4/}
}