1. Ackoff, R. L. (1981).Creating the Corporate Future, John Wiley and Sons, New York.
2. Ansoff, I. (1984).Implanting Strategic Management, Prentice-Hall, Englewood Cliffs, NJ.
3. Checkland, P. B. (1981).Systems Thinking, Systems Practice, John Wiley and Sons, Chichester.
4. Eden, C., Jones, S., and Sims, D. (1983).Messing About in Problems: An Informed Structured Approach to Their Identification and Management, Pergamon Press, Oxford.
5. Flood, R. L., and Carson, E. R. (1988).Dealing with Complexity: An Introduction to the Theory and Application of Systems Science, Plenum Press, New York.