Aizenman, J. (1984), "Testing Deviations from Purchasing Power Parity (ppp)" NBER Working Paper No 1475, October. [OpenAIRE]
Balassa, B. (1964), "The Purchasing Power Parity Doctrine: A Reappraisal," Journal of Political Economy, December.
Metzler, L. A. et.al. (1947), 'International Monetary Policies," Board of Governors of the Federal Reserve, Postwar Economic Studies, No.7,