3IMF, World Economic Outlook: Tensions from the Two-Speed Recovery, April 2011, p. 181.
4IMF, World Economic Outlook: Slowing Grow, Rising Risks, September 2011, p. 178.
5Carmen M. Reinhart and Kenneth S. Rogoff, "Growth in a Time of Debt", American Economic Review, No. 2, 2010, pp. 573- 578.
6Carmen M. Reinhart and Kenneth S. Rogoff, This Time Is Differera : Eight Centuries of Financial Folly, Princeton, NJ : Princeton University Press, 2009.
7European Commission, 2011 Report on Public Finances in EMU, 2011, p. 23.
8Executive Office of the President, Fiscal Year 2012 Historical Tables, Budget of the U. S. Government,Office of Management and Budget, 2011, p. 140.
9World Trade Organization,-Iniernationtd Trade Statistics, December 2010, pp. 11-12.
10World Trade Organization, International Trade Statistics, November 2011, pp. 22-23.
