1. The Object Management Group, MDA Information Portal,
http://www.omg.org/mda
2. The Object Management Group, UML2 Superstructure specification (August 2003),
http://www.omg.org/
3. Graham, S., et al.: Building Web Services with Java: Making sense of XML, SOAP, WSDL and UDDI (2002)
4. Microsoft, IBM, BEA, et al.: Business Process Execution Language for Web Services Specification (May 5 2004)
5. Sun Microsystem. Java 2 Platform Enterprise Edition Specification v1.4 (November 2003),
http://java.sun.com/j2ee