@article{MVK_2011_2_1_a3,
     author = {V. G. Smirnov},
     title = {Layers of a~finite automaton},
     journal = {Matemati\v{c}eskie voprosy kriptografii},
     pages = {97--117},
     year = {2011},
     volume = {2},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MVK_2011_2_1_a3/}
}