@inproceedings{DLT-2008-DAlessandroV,
	author        = "Flavio D'Alessandro and Stefano Varricchio",
	booktitle     = "{Proceedings of the 12th International Conference on Developments in Language Theory}",
	doi           = "10.1007/978-3-540-85780-8_6",
	isbn          = "978-3-540-85779-2",
	pages         = "84--95",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Well Quasi-orders in Formal Language Theory}",
	volume        = 5257,
	year          = 2008,
}