1. Carver, S (2001) Participation and geographical information: a position paper. Position paper for the ESF-NSF Workshop on Access to Geographic Information and Participatory Approaches Using Geographic Information. Spoleto, Italy.
2. Castells, M (2001) Conversation with Manuel Castells. Institute of International Studies, UC Berkeley. (accessed 30.08.08).
3. Community Participation and Geographic Information Systems,2002
4. Critical issues in participatory GIS: deconstructions, reconstructions, and new research directions;Elwood;Transactions in GIS,2006
5. The value and role of GIS to planned urban management and development in cities in developing countries;Forrester;City Development Strategies,1999