%0 Journal Article %A T. A. Bonich %A M. A. Panferov %A N. N. Tokareva %T On the number of $\ell$-suitable Boolean functions in constructions of filter and combining models of stream ciphers %J Prikladnaâ diskretnaâ matematika %D 2023 %P 21-28 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2023_4_a2/ %G en %F PDM_2023_4_a2