1. IPPC 1990. Climate Change: the Intergovernmental Panel on Climate Change Scientific Assessment. WMO/UNEP/IPCC, Cambridge University Press, Cambridge, 365 pp.
2. IPCC 1992. Climate Change. The Supplementary Report to the Intergovernmental Panel on Climate Change Scientific Assessment. Cambridge University Press, Cambridge, 200 pp.
3. 1990. On the Statistical Analysis of Series of Observations, WMO Technical Note 143, World Meteorological Organization, Geneva, 192 pp.