1. Cox, P. M., Betts, R. A., Jones, C. D., Spall, S. A. & Totterdell, I. J. Nature 408, 184–187 (2000).
2. Houghton, J. T. et al. (eds) Climate Change 1995: The Science of Climate Change (Cambridge Univ. Press, 1996).
3. Sarmiento, J. L. et al. Nature 393, 245–249 (1998).
4. Cao, M. & Woodward, F. I. Nature 393, 249–252 (1998).
5. Houghton, J. T., Callander, B. A. & Varney, S. K. Climate Change 1992: The Supplementary Report to the IPCC Scientific Assessment (Cambridge Univ. Press, 1992).