%0 Journal Article %A D. A. Soshin %T The implementation of Magma and $2$-GOST block cipher substitutions by algebraic threshold functions %J Prikladnaâ diskretnaâ matematika %D 2016 %P 53-66 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2016_3_a3/ %G ru %F PDM_2016_3_a3