%0 Journal Article
%A S. V. Polin
%T An application of topos theory to the investigation of cryptosystems
%J Trudy po diskretnoj matematike
%D 2006
%P 220-252
%V 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TDM_2006_9_a11/
%G ru
%F TDM_2006_9_a11