Xubo Zhang and Z. Meral Özsoyoglu: Reasoning with Implication and Referential Constraints in Semantic Query Optimization. (1994)conf/slp/ZhangO94Reasoning with Implication and Referential Constraints in Semantic Query Optimization.2Xubo Zhang1Z. Meral Özsoyoglu2ILPS Workshop: Constraints and DatabasesILPS Workshop: Constraints and Databases19941994provenance information for RDF data of dblp record 'conf/slp/ZhangO94'2013-12-04T14:42:59+0100