@inproceedings{PPDP-2011-ColazzoS,
	author        = "Dario Colazzo and Carlo Sartiani",
	booktitle     = "{Proceedings of the 13th International Conference on Principles and Practice of Declarative Programming}",
	doi           = "10.1145/2003476.2003490",
	isbn          = "978-1-4503-0776-5",
	pages         = "89--100",
	publisher     = "{ACM}",
	title         = "{Precision and complexity of XQuery type inference}",
	year          = 2011,
}