@INPROCEEDINGS {
	AUTHOR = "Pablo Barcel{\'o} and Leonid Libkin and Miguel Romero",
	TITLE = "On Low Treewidth Approximations of Conjunctive Queries",
	BOOKTITLE = "6th Alberto Mendelzon International Workshop on Foundations of Data Management (AMW)",
	PAGES = "91-101",
	MONTH = "Jun",
	YEAR = "2012",
	ADDRESS = "Ouro Preto, Brazil",
	PUBLISHER = "CEUR Publications",
	SERIES ="CEUR Workshop Proceedings",
	}