@ARTICLE {
	AUTHOR = "Marcelo Arenas and Pablo Barcel{\'o} and Leonid Libkin and Ronald Fagin",
	TITLE ="Solutions and Query Rewriting in Data Exchange",
	JOURNAL = "Information and Computation",
	VOLUME = "228",
	PAGES = "28-61",
	MONTH = "Jul",
	YEAR = "2013",
	PUBLISHER = "Elsevier Science",
	ADDRESS = "Amsterdam, The Netherlands",
	ISSN = "0890-5401"
	}