TY - JOUR AU - N. V. Medvedeva AU - S. S. Titov TI - Description of non-endomorphic maximum perfect ciphers with two-valued plaintext alphabet JO - Prikladnaâ diskretnaâ matematika PY - 2015 SP - 43 EP - 55 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PDM_2015_4_a3/ LA - ru ID - PDM_2015_4_a3 ER -