1. Human Capital and Growth: Theory and Evidence;Romer;NBER Working Paper 3171,1989b
2. Infrastructure and Private-Sector Productivity;Ford;OECD Economic Studies,1991
3. A Contribution to the Theory of Economic Growth;Solow;Quarterly Journal of Economics,1956
4. Public Policy and Private Investment in Turkey;Chibber;World Bank PPR Working Paper,1988