Jacek Kopecký Tomas Vitvar Carine Bournez Joel Farrell SAWSDL: Semantic Annotations for WSDL and XML Schema. 60-67 2007 11 IEEE Internet Computing 6 http://doi.ieeecomputersociety.org/10.1109/MIC.2007.134 db/journals/internet/internet11.html#KopeckyVBF07