Bibliographical References

Atkeson, A. and P. J. Kehoe: Models of Energy Use: Putty-Putty versus Putty- Clay. The American Economic
Review, Vol. 89, No. 4 (Sep., 1999), pp. 1028-1043

Grossman G. M. and Alan B. Krueger: Economic Growth and the Environment. The Quarterly Journal of
Economics, Vol. 110, No. 2 (May, 1995), pp. 353-377

Sala-i-Martin, X. X: Regional Cohesion: Evidence and Theories of Regional Growth and Convergence.
European Economic Review 40 (1996), pp. 1325-1352.