1. P.M. Allen, Cities and Regions as Self-Organising Systems: Models of Complexity (Taylor and Francis, London, 1997)
2. F. Attneave, Applications of Information Theory to Psychology (Holt, Rinehart and Winston, New York, 1959)
3. P. Bak, How Nature Works: The Science of Self-Organised Criticality (Copernicus Press, New York, 1996)
4. A.-L. Barabasi, Linked: How Everything Is Connected to Everything Else (Plume, New York, 2002)
5. M. Batty, Cities and Complexity: Understanding Cities with Cellular Automata, Agent-Based Models, and Fractals (MIT Press, Cambridge, MA, 2005)