Westerhold et al. (2020)
Also: Westerhold et al. 2020
An astronomically dated record of Earths climate and its predictability over the last 66 million years
Westerhold, T., Marwan, N., Drury, A.J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J.S., Bohaty, S.M., De Vleeschouwer, D., Florindo, F., Frederichs, T., Hodell, D.A., Holbourn, A.E., Kroon, D., Lauretano, V., Littler, K., Lourens, L.J., Lyle, M., Palike, H. ...Zachos J. C. (2020). An astronomically dated record of Earths climate and its predictability over the last 66 million years. Science. 369(6509),1383-1387. PDF
https://doi.org/10.1126/science.aba6853
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.