1. Men without children;Akerlof;Economic Journal,1998
2. Anderson, J., Azfar, O., Kaufmann, D., Lee, Y., Mukherjee, A., Ryterman, R., 1999. Corruption in Georgia: Survey Evidence. Mimeo, The World Bank.
3. International comparisons of educational attainment;Barro;Journal of Monetary Economics,1993
4. Beck, T., Clarke, G., Groff, A., Keefer, P., Walsh, P., 2000. New Tools and New Tests in Comparative Political Economy: The Database of Political Institutions. World Bank Policy Research Working Paper No. 2283.
5. The Lenses of Gender: Transforming the Debate on Sexual Inequality;Bem,1993