1. Allen PM (1976) Evolution, Population Dynamics and Stability. Proc Nat Acad Sci 73:3: 665–668
2. Allen PM (1983) Self-Organisation and Evolution in Urban Systems. Cities and Regions as Nonlinear Decision Systems, AAAS Selected Symposia 77: 29–62, Ed Crosby Westview press, Boulder
3. Allen PM (1990) Why the Future is not what it was. Futures 22:6: 555–569
4. Allen PM (1997a) Cities and Regions as Evolutionary Complex Systems. Geographical Systems 4: 103–130
5. Allen PM (1997b) Cities and Regions as Self-Organizing Systems: Models of Complexity. Gordon and Breach, Environmental Problems and Social Dynamics Series, Amsterdam