1. D. F. Andersen, G. P. Richardson, and J. A. M. Vennix (1997) Group Model Building: Adding More Science to the Craft, System Dynamics Review, Vol. 13, No. 2, pp. 187–201.
2. B. Bashein and M. I. Markus (1997) A Credibility Equation for IT Specialists, Sloan Management Review, Vol. 38, No. 4, pp. 35–44.
3. J. M. Carroll (2002) Scenarios and Design Cognition, in proceedings of IEEE Joint International Conference on Requirements Engineering (RE’02), E. Dubois and K. Pohl (ed) Essen, Germany, pp. 3–5, 2002.
4. P. B. Checkland (1999) Soft Systems Methodology: a 30-year Retrospective, New ed. ed. Chichester: Wiley, 1999.
5. J. W. Forrester (1999) Principles of Systems. Waltham, MA: Pegasus Communications Inc., 1999.