Rosing et al. (2010)
Also: Rosing et al. 2010
No climate paradox under the faint early Sun
Rosing, M.T., Bird, D.K., Sleep, N.H. & Bjerrum, C.J. (2010). No climate paradox under the faint early Sun. Nature. 464(7289),744-747. Article
https://doi.org/10.1038/nature08955
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.