%0 Journal Article %A V. K. Leont'ev %A G. L. Movsesyan %A A. A. Osipyan %T Classification of subsets of $B^n$ and additive channels %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2014 %P 23-29 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2014_5_a3/ %G ru %F VMUMM_2014_5_a3