@article{VMUMM_2014_5_a3,
     author = {V. K. Leont'ev and G. L. Movsesyan and A. A. Osipyan},
     title = {Classification of subsets of $B^n$ and additive channels},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {23--29},
     publisher = {mathdoc},
     number = {5},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2014_5_a3/}
}