Walker, J. L. (1969). The diffusion of innovations among the American states. American
Political Science Review, 63(3), 880-899.
Weisbach, D. (2000). Ironing out the flat tax. Stanford Law Review, 52 (3), 599-644.
Webb, S. B. (1985). Government debt and inflationary expectations as determinants of
the money supply in Germany 1919-23. Journal of Money, Credit and Banking, 17
(4), 479-492.
Weyland, K. (2006). External pressures and international norms in Latin American pen-
sion reform. The Helen Kellogg Institute for International Studies Working Paper
Series, No 323. Notre Dame, Indiana.
Weyland, K. (2005). Theories of policy diffusion: lessons from Latin American pension
reform. World Politics, 57 (1), 262-95.
Wilson, D.E. (1987). Trade, capital mobility and tax competition. Journal of Political
Economy, 95, 835-856.
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