Burgess et al. (2017)
Also: Burgess et al. 2017
Initial pulse of Siberian Traps sills as the trigger of the end-Permian mass extinction
Burgess, S. D., Muirhead, J. D. & Bowring, S. A. (2017). Initial pulse of Siberian Traps sills as the trigger of the end-Permian mass extinction. Nature Communications. 8(1). PDF
https://doi.org/10.1038/s41467-017-00083-9
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.