data(edcCO2)
Monnin, E., A. et al. 2001. Atmospheric CO2 concentrations over the last glacial termination. Science, Vol. 291, pp. 112-114.
Petit, J.R. et al. 1999. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399: 429-436.
Siegenthaler, U. et al. 2005. Stable Carbon Cycle-Climate Relationship During the Late Pleistocene. Science, v. 310 , pp. 1313-1317, 25 November 2005.