@article{DM_2003_15_4_a3,
     author = {A. E. Kirnasov},
     title = {On glueing states of an automaton},
     journal = {Diskretnaya Matematika},
     pages = {66--83},
     year = {2003},
     volume = {15},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2003_15_4_a3/}
}