1. Principles of Systems;Forrester,1973
2. Patterns of Problem Solving;Rubenstein,1975
3. DYNAMO II User's Manual;Pugh,1973
4. Introduction to 1130 Systems Modelling Programme II (CSMP II), GH20-0848-1;IBM Corporation,1976
5. An interactive graphics system for modelling and research by non-programmers;Seeley,1975