1R Costanza, et al. The value of the world' ecosystem services and natural capital. Nature, 1997, 387
2Landell-Mills N, Bishop J, Porras I. Silver Bullet or Fools' Gold-a Global Review of Markets for Forest Environmental Services and their Impacts for the Poor. Instruments for Sustainable Private Sector Forestry Series. IIED, London, 2001.http://www.iied.org/enveco
3Sara Scherr, Arvind Khare, Andy White. Current Status and Future Potential of Markets for Ecosystem Services of Tropical Forests: an Overview. A report prepare for the International Tropical Timber Organization, 2003
4Anne Gouyon. Rewarding the Upland Poor for Environmental Services: A Review of Initiatives from Developed Countries, 2003. http://www.worldagroforestrycentre.org/sea
5Tognetti, Sylvia S. Creating Incentives for River Basin Management as a Conservation Strategy: A Survey of the Literature and Existing Initiatives. World Wildlife Fund, Washington DC, US, 2001. http://www.Flowsonline.org
6Perrot-Maitre D, Davis P.Case Studies: Developing Markets for Water Services from Forests. Forest Trends, Washington DC, 2001.http://www.forest-trends.org
7Johnson N, White A, Perrot-Maitre D. Developing Markets for Water Services From Forests: Issues and Lessons for Innovators. Forest Trends, Washington DC, 2001. World Resources Institute, the Katoomba Group. http://www.forest-trends.org
