@article{PDM_2009_10_a0,
     author = {V. G. Bushkov and N. V. Evtushenko},
     title = {Solving parallel equations over $\omega$-regular languages},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {6--7},
     publisher = {mathdoc},
     number = {10},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2009_10_a0/}
}