Tett et al. (2002)
Also: Tett et al. 2002
Estimation of natural and anthropogenic contributions to twentieth century temperature change
Tett, S. F., Jones, G. S., Stott, P. A., Hill, D. C., Mitchell, J. F., Allen, M. R., ... & Roberts, D. L. (2002). Estimation of natural and anthropogenic contributions to twentieth century temperature change. Journal of Geophysical Research: Atmospheres, 107(D16). Link to paper
DOI: 10.1029/2000JD000028
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.