1. Productivity;Acemoglu;Differences Quarterly Journal of Economics,2001
2. The role of human capital in economic development: evidence from cross-country data;Benhabib;Journal of Monetary Economics,1994
3. The challenge of segmented labor market theories to orthodox theory: a survey;Cain;Journal of Economic Literature,1976
4. Accounting for Cross-Country Income Differences;Caselli,2005
5. The BLS productivity measurement program;Dean,1998