@inproceedings{PODS-2009-Figueira,
	author        = "Diego Figueira",
	booktitle     = "{Proceedings of the 28th Symposium on Principles of Database Systems}",
	doi           = "10.1145/1559795.1559827",
	isbn          = "978-1-60558-553-6",
	pages         = "197--206",
	publisher     = "{ACM}",
	title         = "{Satisfiability of downward XPath with data equality tests}",
	year          = 2009,
}