1. Assfalg, J., Bertini, M., Colombo, C., Del Bimbo, A.: Semantic Annotation of Sports Videos. IEEE MultiMedia 9(2), 52–60 (2002)
2. Doerr, M., Hunter, J., Lagoze, C.: Towards a Core Ontology for Information Integration. Journal of Digital Information, 4(1) (April 2003)
3. Fallside, D.: XML Schema Part 0: Primer. W3C Recommendation (2001), http://www.w3.org/TR/xmlschema-0/
4. Mc Guiness, D., van Harmelen, F.: OWL Web Ontology Language Overview. W3C Candidate Recommendation (2003), http://www.w3.org/TR/owl-features/
5. Hunter, J.: Adding Multimedia to the Semantic Web - Building an MPEG-7 Ontology. In: International Semantic Web Working Symposium (SWWS), Stanford, July 30 - August 1 (2001)