Siegenthaler et al. (2005)
Also: Siegenthaler et al. 2005
Stable carbon cycle–climate relationship during the late Pleistocene
Siegenthaler, U., Stocker, T. F., Monnin, E., Lüthi, D., Schwander, J., Stauffer, B., ... & Jouzel, J. (2005). Stable carbon cycle–climate relationship during the late Pleistocene. Science, 310(5752), 1313-1317. Link to paper.
DOI: 10.1126/science.1120130
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.