1. Large sample properties of matching estimators for average treatment effects;Abadie;Econometrica,2006
2. The effect of the EEC and EFTA on European Trade: a temporal cross-section analysis;Aitken;American Economic Review,1973
3. Currency unions;Alesina;Quarterly Journal of Economics,2002
4. Optimal currency areas;Alesina,2002
5. A theoretical foundation for the gravity equation;Anderson;American Economic Review,1979