6Kenneth Rogoff & Carmer Reinhart, This Time is Different: Eight Centuries of Financial Folly, Princeton University Press, 2008, p. 106.
7IMF, "International Financial Statistics", August 2010, http ://www. imf. org.
8J. Sachs and X. Sala-i-Martin, "Fiscal Federation and Optimum Currency Areas: Evidence for Europe form the U. S. ", NBER Working Papers, No. 3855,1992.
9Tamim Bayoumi and Paul Masson, "Fiscal Flows in the United States and Canada: Lessons for Monetary Union in Europe", European Economic Review, Vol. 39, No. 2, February 1995, pp. 253-274.
10R. Dombusch, C. A. Favero and F. Giavazzi, "The Immediate Challenges for the European Central Bank", Eonomic Policy, Vol. 13, No. 26, April 1998, pp. 17-64.