1. The State of the World’s Cities Report 2006/2007https://sustainabledevelopment.un.org/content/documents/11292101_alt.pdf
2. World Urbanization Prospects (Highlights)http://esa.un.org/unpd/wup/Highlights/WUP2014-Highlights.pdf
3. The suburbanisation process in Bogotá D.C. and
municipalities of the Savanna of Bogotá, 1998–2010;Pardo Martínez,2014
4. Technology and the Life Cycle of Cities;Brezies;J. Econ. Growth,1997
5. Regional Advantage: Culture and Competition in Silicon Valley and Route 128;Saxenian,1994