@article{DM_1990_2_1_a3,
     author = {V. I. Malygin},
     title = {Superpositions of automata and linear spaces connected with them},
     journal = {Diskretnaya Matematika},
     pages = {31--42},
     year = {1990},
     volume = {2},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1990_2_1_a3/}
}