%0 Journal Article %A A. V. Cheremushkin %T On the notion of electronic signature %J Prikladnaâ diskretnaâ matematika %D 2012 %P 53-69 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2012_3_a6/ %G ru %F PDM_2012_3_a6