Media type: E-Article Title: Journal on Data Semantics III: Data Semantics in Location-Based Services Contributor: Tryfona, Nectaria; Pfoser, Dieter Published: Springer Berlin Heidelberg, 2005 Published in: Journal on Data Semantics III (2005), Seite 168-195 Language: Not determined DOI: 10.1007/11496168_8 ISBN: 9783540262251; 9783540315513 ISSN: 0302-9743; 1611-3349 Origination: Footnote: