TY - JOUR AU - G. I. Ivchenko AU - Yu. I. Medvedev TI - Parametric models of $r$-permutations and $r$-partitions and their probabilistic-statistical analysis JO - Matematičeskie voprosy kriptografii PY - 2018 SP - 47 EP - 64 VL - 9 IS - 1 UR - http://geodesic.mathdoc.fr/item/MVK_2018_9_1_a2/ LA - ru ID - MVK_2018_9_1_a2 ER -