1. Aknine, S., Pinson, S., Shakun, M.F.: An Extended Multi-Agent Negotiation Protocol. Autonomous Agents and Multi-Agent Systems 8(1), 5–45 (2004)
2. Lecture Notes in Computer Science;J. Billington,2004
3. Billington, J., Gupta, A.K.: Effectiveness of Coloured Petri nets for Modelling and Analysing the Contract Net Protocol. In: Proceedings of 8th Workshop and Tutorial on Practical Use of Coloured Petri Nets and the CPN Tools, Aarhus, Denmark, October 22-24, 2007, pp. 49–65 (2007)
4. Ferber, J.: Multi-Agent Systems: An Introduction to Distributed Artificial Intelligence. Addison-Wesley Longman, Amsterdam (1999)
5. Fischer, K., Kuhn, N.: A DAI Approach to Modelling the Transportation Domain, DFKI Research Report RR-93-25. German Research Centre for Artificial Intelligence (DFKI), Saarbrücken (1993)