1Mankiw, G., Romer and Well, D., (1992), A Contribution to the Empirics of Economic Growth, in: Quarterly Journal of Economics, 107,407 - 437.
2De Long, J. B. and Summers, L. H. (1991), Equipment Investment and Economic Growth, in: Quarterly Journal of Economics, 106,445 - 502.
3Levine, R. and Renelt, D. (1992), A Sensitivity Analysis of Cross - country Growth Regressions, in: American Economic Review, 82, 942 - 963. ).
4Fagelberg, J. (1994), Technology and Internalional Differences in Growth Rates, in: Journal of Economic Literatures, 32,1147 - 1175.
5Quah, D. (1996), Empirles for Economic Growth and Convergenee, in European Economic Review, 40, 1353- 1375.
6Nelson, Richard R. and Edmund S. Phelps (1966),Investment in Humans, Technological Diffusion, and Economic Growth.n American Economic Review 56:69 - 75.
7Johnson, H. (1975), On Economics and Society, Chicago: University of Chicago Press, p283.
8Psacharopoulos,(;. (1973), Returns to Education, Amsterdam: Elsenier.
