Keller et al. (2013)
Also: Keller et al. 2013
Chicxulub impact spherules in the North Atlantic and Caribbean: age constraints and Cretaceous–Tertiary boundary hiatus
Keller, G., Khozyem, H., Adatte, T., Malarkodi, N., Spangenberg, J. E., & Stinnesbeck, W. (2013). Chicxulub impact spherules in the North Atlantic and Caribbean: age constraints and Cretaceous–Tertiary boundary hiatus. Geological Magazine, 150(05), 885-907. Link to abstract
DOI: http://dx.doi.org/10.1017/S0016756812001069
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.