@article{PDM_2009_2_a2,
     author = {G. P. Agibalov},
     title = {Discrete automata on semilattices},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {26--49},
     publisher = {mathdoc},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2009_2_a2/}
}