1. Bellman, R. (1957) Dynamic Programming, Princeton University Press, Princeton.
2. Broome, J. (1978) Trying to value a life, Journal of Public Economics
9, 91–100.
3. Cameron, A. C. and Trivedi, P. K. (1991) The role of income and health risk in the choice of health insurance, Journal of Public Economics
45, 1–28.
4. Cropper, M. L. and Freeman, A. M. (1991) Environmental health effects, in J. B. Braden and C. D. Kolstad (eds.), Measuring the Demand for Environmental Quality, North-Holland, Amsterdam.
5. Dickie, S. and Gerking, S. (1991) Willingness to pay for ozone control: Inferences from the demand for medical care, Journal of Environmental Economics and Management
21, 1–16.