@article{DLT-J-2007-Selivanov08,
	author        = "Victor L. Selivanov",
	doi           = "10.1142/S0129054108005875",
	journal       = "{International Journal of Foundations of Computer Science}",
	number        = 3,
	pages         = "649--675",
	publisher     = "{World Scientific}",
	title         = "{Fine Hierarchy of Regular Aperiodic ω-Languages}",
	volume        = 19,
	year          = 2008,
}