1. Targeting Revisited
2. The political economy of targeting. In Public Spending and the Poor Theory and Evidence, (eds). World Bank: Washington, DC, 1995; 11-23.
3. Efficiency and equity in social spending: how and why governments misbehave. In Including the Poor, (eds). World Bank: Washington, DC, 1993; 335-359.
4. Protecting the vulnerable: social security and public policy. In Including the Poor, (eds). World Bank: Washington, DC, 1993; 359-378.
5. School health insurance: theory and practice (in Arabic), 1995.