@INBOOK {
	AUTHOR = "Ricardo Baeza-Yates and Gonzalo Navarro and Nivio Ziviani",
	TITLE = "Documents: Languages and Properties",
	EDITOR = "R. Baeza-Yates and B. Ribeiro-Neto",
	BOOKTITLE = "Modern Information Retrieval",
	PAGES = "203-254",
	YEAR = "2011",
	PUBLISHER = "Addison-Wesley-Longman",
	ADDRESS = "Boston, MA, USA",
	ISBN = "978-0-321-41691-9",
	NOTE = "Chapter 6",
	}