%0 Journal Article %A G. P. Agibalov %T 50 years of cryptography in Tomsk State University %J Prikladnaâ diskretnaâ matematika %D 2009 %P 104-126 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2009_2_a7/ %G ru %F PDM_2009_2_a7