1. The Market for "Lemons": Quality Uncertainty and the Market Mechanism
2. 2000. The use and usefulness of PSI services. In Pre-Shipment Inspection: Past Experiences and Future Directions. Trade and Enterprise Paper 2. Commonwealth Secretariat: London.
3. 1999. Corruption under moral hazard. World Bank Policy Research Working Paper No. 2204, Washington.
4. 1997. Microeconomics of Banking. MIT Press: Cambridge.
5. 2001. Committing to Civil Service Reform: the Performance of pre-shipment inspection under different institutional regimes. World Bank Policy Research Working Paper No. 2594, Washington.