%0 Journal Article %A V. N. Potapov %T A~survey of methods for the undistorted coding of discrete sources %J Diskretnyj analiz i issledovanie operacij %D 1999 %P 49-91 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DA_1999_6_4_a4/ %G ru %F DA_1999_6_4_a4