TY  - JOUR
AU  - N. N. Tokareva
TI  - Quadratic approximations of the special type for the 4-bit permutations in S-boxes
JO  - Prikladnaâ diskretnaâ matematika
PY  - 2008
SP  - 50
EP  - 54
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PDM_2008_1_a9/
LA  - ru
ID  - PDM_2008_1_a9
ER  -