@INBOOK {
	AUTHOR = "Marcelo Arenas and Jorge P{\'e}rez and Claudio Gutierrez",
	TITLE = "Foundations of RDF Databases",
	BOOKTITLE = "Reasoning Web. Semantic Technologies for Information Systems.",
	PAGES = "158-204",
	YEAR = "2009",
	PUBLISHER = "Springer-Verlag",
	ADDRESS = "Berlin/Heidelberg, Germany",
	ISBN = "978-3-642-03753-5",
	SERIES ="Lecture Notes in Computer Science",
	NUMBER = "5689",
	}