1. How large are the social returns to education? Evidence from Compulsory Schooling Laws;ACEMOGLU;NBER Macroannual 2000,2000
2. Does human capital matter for growth in OECD countries? Evidence from pooled mean-group estimates;BASSANINI;OECD Economics Department Working Paper,2001
3. Common Agency;BERNHEIM;Econometrica,1986