1. Aizenman, J. (1983) Modeling deviations from Purchasing Power Parity (PPP), NBER Working Paper No. 1066, pp. 1–26.
2. Aloy, M., and K. Gente. 2005. How an aging population can explain the real appreciation of the Yen/US Dollar? CEDERS Working Paper, No. 03, AIX- Marseille II University, France.
3. Apte, P., P. Sercu, and R. Uppal. 2001. The exchange rate and purchasing power parity: Extending the theory and tests, Working Paper (August 2001), pp.1–21.
4. Purchasing power parity in the presence of foreign exchange black markets: the case of India