9Aghion, P.,P. Howitt, and D. Mayor-Foulkes, 2005, “The Effect of Financial Development on Convergence : Theory andEvidenceM , Quarterly Journal of Economics, 120,173—222.
10Combes, P. P.,T. Mayer, and J. F. Thisse,2008, Economic Geography: The Integration of Regions and Nations, Princeton UniversityPress.