1. Ackerman, Bruce A., Rose-Ackerman, Susan, Sawyer Jr., James, W. and Henderson, Dale W. (1974). The Uncertain Search for Environmental Quality. London: Collier Macmillan.
2. Acton, Jan Paul (1976). ?Measuring the monetary value of lifesaving programs,? Law and Contemporary Problems (Autumn) 40 (4): 46?72.
3. Crocker, Thomas D. (1978). ?Benefits of air pollution control,? in A. Hershaft, A. M. Freeman, T. D. Crocker and J. B. Stevens (eds.), Critical Review of Estimating Benefits of Air and Water Pollution Control. United States Environmental Protection Agency (June): III-1?III-56.
4. Evans, R. G. (1978). ?The Cost-Effectiveness of Preventive Health Services.? Paper prepared for the Alberta Public Health Association Convention, Red Deer, Alberta, April 12.
5. Freeman, A. M. (1974) ?On estimating air pollution control benefits from land value studies,? Journal of Environmental Economics and Management (May) 1: 74?83.