@article{DM_2009_21_4_a3,
     author = {A. V. Babash},
     title = {Periods of output sequences of an automaton for a~given periodic input sequence},
     journal = {Diskretnaya Matematika},
     pages = {39--59},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2009_21_4_a3/}
}