1. Aaris-Sorensen, K., Petersen, K. S. & Tauber, H. Geol. Surv. Denmark 14, 1–44 (1990).
2. Lister, A. M. CBA Res. Rep. 77, 51–59 (1991).
3. Gowlett, J. A. J., Hedges, R. E. M., Law, I. A. & Perry, C. Archaeometry 29, 125–155 (1987).
4. Lavrov, A. V. & Mashchenko, E. N. Priroda 1, 52–55 (1991).
5. Kurtén, B. & Anderson, E. Pleistocene Mammals of North America (Columbia Univ. Press, New York, 1980).