Wagstaff, A., Van Doorslaer, E., & World Bank Development Research Group Public Services for Human Development. (2001). Paying for health care: Quantifying fairness, catastrophe, and impoverishment, with applications to Vietnam, 1993-98. World Bank, Development Research Group, Public Services for Human Development.

Wagstaff, Adam, Eddy Van Doorslaer, and World Bank Development Research Group Public Services for Human Development. Paying for Health Care: Quantifying Fairness, Catastrophe, and Impoverishment, with Applications to Vietnam, 1993-98. Washington, D.C: World Bank, Development Research Group, Public Services for Human Development, 2001.

Wagstaff, Adam, et al. Paying for Health Care: Quantifying Fairness, Catastrophe, and Impoverishment, with Applications to Vietnam, 1993-98. World Bank, Development Research Group, Public Services for Human Development, 2001.