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2. Branson, W. (1979) Macroeconomic Theory and Policy (New York: Harper & Row) 2nd edn.
3. Davidson, P. (1974) ‘A Keynesian view of Friedman’s theoretical framework for monetary analysis,’ in Gordon (1974) pp. 90–110, esp. p. 95.
4. Fisher, I. (1930) The Theory of Interest (New York: Macmillan).
5. Friedman, M. (1956) ‘The quantity theory of money — A restatement,’ in Studies in the Quantity Theory of Money (Chicago: University of Chicago Press).