1. Beran, M.: 1986, in J. Titus (ed.), ?The Water Resource Impact of Future Climate Change and Variability?, International Conference on Health and Environmental Effects of Ozone Modification and Climate Change, US Government Printing Office, Washington, DC, pp. 299?328.
2. Broecker, W. C.: 1987, ?Unpleasant Surprises in the Greenhouse??, Nature 328, 123?126.
3. Chernogaeva, G. M.: 1971, Water Balance of Europe, Institute of Geography?Soviet Geophysical Committee, Academy of Sciences of the USSR, Moscow (in Russian, with summary in English).
4. Falkenmark, M.: 1986, ?Fresh Water?Time for a Modified Approach?, Ambio 15, 192?200.
5. Falkenmark, M., Biswas, A., Hori, H., Ishibashi, T., Kovacs, G., Rogers, P., and Shuval, H.: 1987, ?Water-Related Limitations to Local Development: Round Table Discussion?, Ambio 16 (4), 191?200.