@inproceedings{LICS-2004-KhoussainovNRS,
	author        = "Bakhadyr Khoussainov and André Nies and Sasha Rubin and Frank Stephan",
	booktitle     = "{Proceedings of the 19th IEEE Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.2004.1319599",
	isbn          = "0-7695-2192-4",
	pages         = "44--53",
	publisher     = "{IEEE Computer Society}",
	title         = "{Automatic Structures: Richness and Limitations}",
	year          = 2004,
}