33,000-yr old chert mining site and related Homo in the Egyptian Nile Valley

Vermeersch, P. M. et al. Science 216, 626–628 (1982).

Wendorf, F. & Schild, R. Prehistory of the Nile Valley (Academic, New York, 1976).

Shepherd, R. Prehistoric Mining and Allied Industries (Academic, London, 1980).

Olivier, G., Aaron, C., Fully, G. & Tissier, G. J. Hum. Evol. 7, 513–518 (1978).

Martin, R. Lehrbuch der Anthropologie (Fischer, Jena, 1928).

Ferembach, D. Bull. Mém. Soc. Anthrop., Paris 3 (Sér. XIII), 183–193 (1976).

Weisgerber, G. (ed.) 5000 Jahre Feuersteinbergbau (Deutschen Bergbau-Museum, Bochum, 1980).

Chmielewski, W. in Contributions to the Prehistory of Nubia (ed. Wendorf, F.) 147–164 (Southern Methodist University, Dallas, 1965).

Dart, R. A. & Beaumont, P. Curr. Anthrop. 10, 127–128 (1969).