1. On the measurement of inequalities in health
2. Socioeconomic inequalities in health: Measurement, computation, and statistical inference
3. Socioeconomic Differences in Health, Nutrition and Population. Health, Nutrition and Population Discussion Paper. The World Bank: Washington, DC, 2000. http://www.worldbank.org/poverty/health/data/index.htm
4. Socioeconomic Differences in Health, Nutrition and Population (2nd edn). Health, Nutrition and Population Discussion Paper. The World Bank: Washington, DC, 2003.