1. Angele, J., et al.: Web rule language (WRL). W3C Member Submission (June 2005), http://www.w3.org/Submission/WRL/
2. Battle, S., et al.: Semantic Web services Framework (SWSF). W3C Member Submission (May 2005), http://www.w3.org/Submission/SWSF/
3. Berners-Lee, T., Connolly, D., Prud’homeaux, E., Scharf, Y.: Experience with N3 rules. In: W3C Workshop on Rule Languages for Interoperability, Washington, D.C., USA (April 2005)
4. Lecture Notes in Computer Science;P. Bouquet,2003
5. Brickley, D., Guha, R.V. (eds.): McBride, B. (series ed.): RDF Vocabulary Description Language 1.0, W3C Recommendation (February 2004), http://www.w3.org/TR/2004/REC-rdf-schema-20040210/