1. Redesigning the future, a systems approach to societal problems;Ackoff,1974
2. Approaches to planning; introducing current planning theories, concepts and issues;Alexander,1986
3. Self-organization and evolution in urban systems;Allen,1983
4. Cities and regions as self-organizing systems: Models of complexity;Allen,1997
5. The role of planning in self-Organizing urban and regional systems;Allen,2016