1. Environmental Accounting for Sustainable Development. A UNEP—World Bank Symposium,1989
2. Environmental Preservation, Uncertainty, and Irreversibility;Arrow;Quarterly Journal of Economics,1974
3. Review and Evaluation of I-O Flow Analysis for Ecological Applications;Barber,1979
4. Estimating Benefits of Range for Wildland Management and Planning;Bartlett,1984
5. Option Value: An Exposition and Extension;Bishop;Land Economics,1982