@inproceedings{DLT-2008-CaludeNSS,
	author        = "Cristian S. Calude and André Nies and Ludwig Staiger and Frank Stephan",
	booktitle     = "{Proceedings of the 12th International Conference on Developments in Language Theory}",
	doi           = "10.1007/978-3-540-85780-8_13",
	isbn          = "978-3-540-85779-2",
	pages         = "170--182",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Universal Recursively Enumerable Sets of Strings}",
	volume        = 5257,
	year          = 2008,
}