1. 2. B. Berelson, and G. A. Steiner , Human Behavior, An Inventory of Scientific Findings (Harcourt, Brace and World, New York, 1964 ), pp. 100 -101 , paraphrased.
2. Information and Complexity
3. 4. A. R. Tiemann , The Technology/Environment Debate (Unpublished).
4. Coherent Social Groups in Scientific Change