1. M. Aarup, K. H. Munch, J. Fuchs, R. Hartmann, and T. Baud. Distributed intelligence for ground space systems. In Proc. Third International Symposium on Artificial Intelligence, Robotics, and Automation for Space (I-SAIRAS 94), pages 67–70, Pasadena, CA (USA), 18–20 April 1994. Jet Propulsion Laboratory.
2. J. Allen. Natural Language Understanding. Benjamin Cummings Publishing Company, 1994.
3. T. Ames and S. Henderson. The workplace distributed processing environment. In C. Hostetter, editor, Proc. 1993 Goddard Conference on Space Applications of Artificial Intelligence, pages 181–188, Greenbelt, MD (USA), 10–13 May 1993. NASA Goddard Space Flight Center, NASA Conference Publication 3200.
4. A. H. Bond and L. Gasser. Readings in Distributed Artificial Intelligence. Morgan Kaufmann Publishers, San Mateo, CA (USA), 1988.
5. H. Chalupsky, T. Finin, R. Fritzson, D. McKay, S. Shapiro, and G. Weiderhold. An overview of KQML: A knowledge query and manipulation language. Technical report, KQML Advisory Group, April 1992.