7Corden W.M.. Monetary Integration: Essays in InternationalFinance[R]. International Finance Section No.93, Princeton University, Department of Economics, 1972.
8Tavals G. S.. Internationalization of Currencies: The case of the US Dollar and Its Challenger Euro[M]// The International Excutive (1996-1998).
9Hartmann E.The International Role of Euro[J]. Journal of Policy Modeling, 2002, (24).