1. CLIMAP Project Members Map Chart Series MC-36
(Geol. Soc. America, Boulder, 1981).
2. Berger, A. & Loutre, M. F. Quat. Sci. Rev. 10, 297–317 (1991).
3. Guilderson, T. P., Fairbanks, R. G. & Rubenstone, J. L. Science 263, 663–665 (1994).
4. Stute, M. et al. Science 269, 379–383 (1995).
5. Kershaw, A. P. et al. A Comparison of Long Quaternary Pollen Records from the Atherton and Western Plains Volcanic Provinces, Australia (Geol. Soc. Australia, Sydney, 1991).