@article{VLDB-2012-CautisK,
	author        = "Bogdan Cautis and Evgeny Kharlamov",
	ee            = "http://vldb.org/pvldb/vol5/p1148_bogdancautis_vldb2012.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 11,
	pages         = "1148--1159",
	title         = "{Answering Queries using Views over Probabilistic XML: Complexity and Tractability}",
	volume        = 5,
	year          = 2012,
}