%0 Journal Article %A P. A. Ushakov %T On a method to set up a covert channel and estimation of its tolerance for interference %J Diskretnaya Matematika %D 2007 %P 60-66 %V 19 %N 1 %U http://geodesic.mathdoc.fr/item/DM_2007_19_1_a7/ %G ru %F DM_2007_19_1_a7