[dBFK+08] Jos de Bruijn, Dieter Fensel, Uwe Keller, Mick Kerrigan, Holger Lausen, and James Scicluna. Modeling Semantic Web Services - The Web Service Modeling Language. Springer, 2008.
[FLP+06] Dieter Fensel, Holger Lausen, Axel Polleres, Jos de Bruijn, Michael Stollberg, Dumitru Roman, and John Domingue. Enabling Semantic Web Services - The Web Service Modeling Ontology. Springer, 2006.
[ABB+05] Vladimir Alexiev, Michael Breu, Jos de Bruijn, Rubén Lara, Holger Lausen, and Dieter Fensel. Information Integration with Ontologies. Wiley, West Sussex, UK, 2005.