1. Object Management Group (OMG): Object Constraint Language Version 2.0 (formal/06-05-01),
http://www.omg.org
2. Object Management Group (OMG): Production Rule representation (bmi/2007-03-05),
http://www.omg.org
3. Object Management Group (OMG): Semantics of Business Vocabulary and Business Rules (SBVR) (dtc/06-08-05),
http://www.omg.org
4. Wüst, K.: Business Rules auf Basis von UML/OCL. Diploma Thesis, Technische Universität Dresden (2006)
5. Lecture Notes in Computer Science;S. Spreeuwenberg,2006