Jacek Kopecky. <a href="http://www.w3.org/TR/2007/NOTE-wsdl20-rdf-20070626"><cite>Web Services Description Language (WSDL) Version 2.0: RDF Mapping.</cite></a> 26 June 2007. W3C Note. URL: <a href="http://www.w3.org/TR/2007/NOTE-wsdl20-rdf-20070626">http://www.w3.org/TR/2007/NOTE-wsdl20-rdf-20070626</a>