@article{DM_1990_2_1_a10,
     author = {A. S. Podkolzin and \v{S}. M. U\v{s}\'cumli\'c},
     title = {Solution of systems of automaton equations},
     journal = {Diskretnaya Matematika},
     pages = {94--103},
     year = {1990},
     volume = {2},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1990_2_1_a10/}
}