@inproceedings{CIKM-2009-ColazzoGPS,
	author        = "Dario Colazzo and Giorgio Ghelli and Luca Pardini and Carlo Sartiani",
	booktitle     = "{Proceedings of the 18th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1645953.1645973",
	isbn          = "978-1-60558-512-3",
	pages         = "137--146",
	publisher     = "{ACM}",
	title         = "{Linear inclusion for XML regular expression types}",
	year          = 2009,
}