1. 2000. Anticipating balance of payment crises: The role of early warning systems, IMF Occasion Paper 186.
2. Predicting currency crises:
3. What Caused the Asian Crises: An Early Warning System Approach
4. 1994. Speculative attacks on pegged exchange rates: An empirical exploration with special reference to the European monetary system. NBER Working Paper No. 4898, Cambridge, National Bureau of Economic Research.