Dijkgraaf, E. and Gradus, R.H.J.M. (2008). Per-unit garbage charges: response to Examining the justification for residential recycling Journal of Economic Perspectives, 22(2):243--246.
Beetsma, R., Giuliodori, M. and Klaassen, F. (2008). The effects of public spending shocks on trade balances and budget deficits in the European Union Journal of the European Economic Association, 6(2-3):414--423.
