Climate change 2001 : the scientific basis : contribution of Working Group I to the third assessment report of the Intergovernmental Panel on Climate Change - Houghton, J. T. 1931-; Ding, Y.; Griggs, David J.; Noguer, M.; Van der Linder, P.J.; Dai, X.; Maskell, K.; Johnson, Carl Albert (Cambridge University Press, 2001)