1. How large are human capital externalities? Evidence from compulsory schooling laws;Acemoglu,2001
2. Is public expenditure productive?;Aschauer;Journal of Monetary Economics,1989
3. Why is infrastructure important?;Aschauer,1990
4. Public investment, the rate of return, and optimal fiscal policy;Arrow,1970
5. Knowledge spillovers and the geography of innovation;Audretsch,2005