1. AgentLink III, http://www.agentlink.org/
2. AGlobe, Agent Technology Center, Czech Technical university, http://agents.felk.cvut.cz/aglobe/
3. Lecture Notes in Computer Science;M.K. Aguilera,1997
4. Lecture Notes in Computer Science;C. Byrne,1996
5. Chen, L., Avizienis, A.: N-version Programming: A Fault-Tolerance Approach to Reliability of Software Operation. In: Digest of Papers of the 8th Annual International Conference on Fault-Tolerant Computing, Toulouse, France (1978)