1. Anonymous (1982): Graphical Kernel System (GKS)-Functional Description. Draft International Standard ISO/DIS 7942 Version 7.02, August 9, 1982. Avaliable through American National Standards Institute Inc. New York, N.Y.
2. Åström, K.J. (1983): Computer aided modeling, analysis and design of control systems-A perspective. IEEE Control Systems Magazine 3:2, 4–16.
3. Atherton, D.P. (1981): The role of CAD in education and research. IFAC Congress VIII, Kyoto, Japan.
4. Barr, A. and E.A. Feigenbaum (1982): The Handbook of Artificial Intelligence. Vol II. W. Kaufmann Inc. Los Altos, Calif.
5. Dertouzos, M.L. and J. Moses (1980): The Computer Age: A twenty year view. MIT Press Cambridge, Mass.