%0 Journal Article %A N. V. Medvedeva %A S. S. Titov %T To the task of description minimal by inclusion perfect ciphers %J Prikladnaya Diskretnaya Matematika. Supplement %D 2021 %P 91-95 %N 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDMA_2021_14_a20/ %G ru %F PDMA_2021_14_a20