1. Andersen K and Lorenzen M (2005)The geography of the Danish creative class: A Mapping and Analysis, Frederiksberg: Department of Industrial Economics and Strategy, Copenhagen Business School.
2. Asheim B and Gertler M (2005) The Geography of Innovation, in Fagerberg J, Mowery D and Nelson R (eds)The Oxford Handbook of Innovation, New York: Oxford University Press, pp. 291–317.
3. Botero G (1979)The Magnificence and Greatness of Cities, Theatrum Orbis Terrarum, Amsterdam. Boulding K (1981)Evolutionary Economics, Beverly Hills CA: Sage Publications.
4. Cummings A (2005) ‘Against All Odds. Building Innovative Capabilities in Rural Economic Initiatives in El Salvador’, PhD Thesis, Aalborg University, Denmark.
5. Edquist C (2005) Systems of Innovation: Perspectives and Challenges, in Fagerberg J, Mowery D and Nelson R (eds)The Oxford Handbook of Innovation, Oxford University Press, pp. 181 208.