References
- EEA, 1999. Environmental indicators: typology and overview. Technical report no. 25, European Environment Agency, Copenhagen
- IPCC, 2014. Climate Change 2014-Impacts, Adaptation and Vulnerability.
- Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK.
- OECD 1991 Environmental Indicators: A Preliminary Set, Organization for Economic Co-operation and Development, Paris.