Sprain et al. (2015)
Also: Sprain et al. 2015
High-resolution chronostratigraphy of the terrestrial Cretaceous-Paleogene transition and recovery interval in the Hell Creek region, Montana
Sprain, C. J., Renne, P. R., Wilson, G. P., & Clemens, W. A. (2015). High-resolution chronostratigraphy of the terrestrial Cretaceous-Paleogene transition and recovery interval in the Hell Creek region, Montana. Geological Society of America Bulletin, 127(3-4), 393-409. Link to abstract
DOI: 10.1130/B31076.1
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.