1. Anderson, R. 1981. A note on option value and expected consumer's surplus.Journal of Environmental Economics and Management 8:187–191.
2. Bishop, R. 1982. Option value: An exposition and extension.Land Economics 58:1–15.
3. Bishop, J., and C. Cicchetti. 1975. Some institutional and conceptual thoughts on the measurement of indirect and intangible benefits and costs.In H. Peskin and E. Seskin (eds.), Cost benefit analysis and water pollution policy. Washington Urban Institute, Washington, DC.
4. Bishop, R., T. Heberlein, and M. Kealy. 1983. Contingent valuation of environmental assets: Comparisons with a simulated market.Natural Resources Journal 23:618–632.
5. Bohm, P. 1975. Option demand and consumer's surplus: Comment.American Economic Review 65:733–736.