1. International Encyclopedia of Systems and Cybernetics,2004
2. Self-Organization of Complex, Intelligent Systems: An Action Ontology for Transdisciplinary Integrationhttp://pespmc1.vub.ac.be/papers/ECCO-paradigm.pdf
3. Systems Thinking: Concepts and Notions;Kramer,1977
4. Abbreviated SystematicaTM 4.0 Glossary—Ordered by Concept;Schindel,2013
5. Management Systems: Conceptual Considerations;Schoderbek,1990