Martin Grohe and Dániel Marx: Constraint solving via fractional edge covers. (2006)conf/soda/GroheM06Constraint solving via fractional edge covers.2Martin Grohe1Dániel Marx2289-298SODASODA20062006provenance information for RDF data of dblp record 'conf/soda/GroheM06'2012-12-07T17:02:08+0100