Media type: E-Article Title: Semantic Web and Databases: Query Answering by Rewriting in GLAV Data Integration Systems Under Constraints Contributor: Calì, Andrea Published: Springer Berlin Heidelberg, 2005 Published in: Semantic Web and Databases (2005), Seite 167-184 Language: Not determined DOI: 10.1007/978-3-540-31839-2_13 ISBN: 9783540245766; 9783540318392 ISSN: 0302-9743; 1611-3349 Origination: Footnote: