1. The Valuation Problem
2. Option value: An exposition and extension;Bishop;Land Econ.,1982
3. Contingent valuation of environmental assets: Comparisons with a simulated market;Bishop;Natl. Resour. J.,1983
4. Boyle , K. J. Essays on the valuation of nonmarket resources: Conceptual issues and empirical case studies Madison 1985
5. Boyle , K. J. R. C. Bishop A comparison of contingent valuation techniques, Staff Pap 222 Dep. of Agric. Econ., Univ. of Wisc. Madison 1984