@article{DAN_1963_151_1_a0,
     author = {G. R. Belitskii},
     title = {On chains of matrix norms},
     journal = {Doklady Akademii Nauk},
     pages = {9--10},
     year = {1963},
     volume = {151},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_151_1_a0/}
}