1. Guilfoyle, C., Warner, E.: Intelligent Agents: New Revolution in Software, p. 214. Ovum Ltd. Publisher, London (1994)
2. Torsun, I.S.: Foundations of Intelligent Knowledge-Based Systems, p. 507. Academic Press, London (1995)
3. Jennings, N.R., Wooldridge, M.J.: Applications of Intelligent Agents. In: Jennings, N.R., Wooldridge, M.J. (eds.) Agent Technology: Foundations, Applications and Markets, pp. 3–28. Springer, Heidelberg (1998)
4. Shen, W., Norrie, D.H., Barthes, J.-P.: Multi-Agent Systems for Concurrent Intelligent Design and Manufacturing, p. 386. Taylor and Francis, London (2001)
5. White, J.E.: Telescript Technology: The Foundation for the Electronic Marketplace, White Paper. General Magic, Inc., USA (1994)