Bender et al. (2006)
Also: Bender et al. 2006
Gas age–ice age differences and the chronology of the Vostok ice core, 0–100 ka
Bender, M. L., Floch, G., Chappellaz, J., Suwa, M., Barnola, J. M., Blunier, T., ... & Parrenin, F. (2006). Gas age–ice age differences and the chronology of the Vostok ice core, 0–100 ka. Journal of Geophysical Research: Atmospheres, 111(D21). Link to paper.
DOI: 10.1029/2005JD006488
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.