1. OMG, “Unified Modeling Language Specification Version 1.5”, March 2003, formal/03-03-01. URL: http://www.omg.org
2. “Response to the UML 2.0 OCL RfP, Revised Submission,Version 1.6”, January 6, 2003, OMG Document ad/2003-01-07
3. “Unified Modeling Language: Infrastructure, version 2.0, Updated submission to OMG RFP ad/00-09-01”, September 2002
4. “Unified Modeling Language: Superstructure version 2.0, 3rd revised submission to OMG RFP ad/00-09-02”, OMG document ad/2003-04-01, 10 April 2003
5. “UML Profile for Schedulability, Performance, and Time Specification”, OMG Adopted Specification, ptc/02-03-02, March 2002