1. Alesina A, Barro RJ, Tenreyro S (2002) Optimal currency areas. National bureau of economic research working papers, 9072
2. Afonso A & Furceri D (2007) Business cycle synchronization and insurance mechanisms in the EU, Working Paper Series 844, European Central Bank
3. Baxter M, King RJ (1999) Measuring Business Cycles: Approximate Band-Pass Filters for Economic Time Series. The Review of Economics and Statistics 81(4):575–593
4. Bayoumi T, Eichengreen B (1992) Shocking aspects of monetary unification. NBER working paper No 3949
5. Blanchard O, Quah D (1989) The dynamic effects of aggregated demand and supply disturbances. Am Econ Rev 79(4):655–673