1. U.S.Army: Field Manual 3-19. Headquarters, Department of the Army, Washington, D.C (1993)
2. Huhns, M., Stephens, L.: Multiagent Systems and Societies of Agents. In: Multiagent Systems: A Modern Approach to Distributed Artificial Intelligence, pp. 79–120. MIT Press, Cambridge (2000)
3. Wooldridge, M.: Intelligent Agents. In: Multiagent Systems: A Modern Approach to Distributed Artificial Intelligence, pp. 27–78. MIT press, Cambridge (2000)
4. Simon, H.A.: The architecture of complexity: Hierarchic systems. Proc. of the American Philosophical Soc. 106, 467–482 (1962)
5. Koestler, A.: The Ghost in the Machine. Macmillan, New York (1968)