1. Web Service Description Language, http://www.w3.org/TR/wsdl
2. Web Ontology Language, http://www.w3.org/TR/2004/REC-owl-guide-20040210/
3. OWL-S, http://www.daml.org/services/owl-s/1.0/owl-s.html
4. Bansal, A., Kona, S., Simon, L., Hite, T.D.: A Universal Service-Semantics Description Language. In: Proceedings of the Third European Conference on Web Services, pp. 214–225. IEEE Computer Society, Washington (2005)
5. Le, D., Nguyen, V., Goh, A.: Matching WSDL and OWL-S Web Services. In: Proceedings of the 2009 IEEE International Conference on Semantic Computing, pp. 197–202. IEEE Computer Society, Washington (2009)