%0 Journal Article %A D. B. Fomin %T New classes of $8$-bit permutations based on a butterfly structure %J Matematičeskie voprosy kriptografii %D 2019 %P 169-180 %V 10 %N 2 %U http://geodesic.mathdoc.fr/item/MVK_2019_10_2_a14/ %G en %F MVK_2019_10_2_a14