1. Amiti, M. (1999) ‘Specialization patterns in Europe’, Weltwirtschaftliches Archiv, 135, 1–21.
2. Baldwin, R. E., R. Forslid, J. I. Haaland and K. H. Midelfart-Knarvik (2001), ‘EU integration and outsiders: A simulation study of industrial location’, in R. E. Baldwin and A. Brunetti (eds), Economic Impact of EU Membership on Entrants. New Methods and Issues, Boston: Kluwer.
3. Black, D. and J. V. Henderson (2003) ‘Spatial Evolution in the USA’, Journal of Economic Geography, 3, 343–72.
4. Braunerhjelm, P., R. Faini, V. D. Norman, F. Ruane and P. Seabright (2000) ‘Integration and the regions of Europe: how the right policies can prevent polarization’, Monitoring European Integration 10’, Centre for Economic Policy Research.
5. Breinlich, H. (2003) Economic Geography and the Regional Income Structure in the EU, London: LSE, Centre for Economic Performance.