1. Expériences de taille d'outils préhistoriques dans des os d'éléphant;Aguirre;Quaternaria,1965
2. African genesis: A personal investigation into the animal origins and nature of man;Ardrey,1961
3. The hunting hypothesis: A personal conclusion concerning the evolutionary nature of man;Ardrey,1976
4. Feeding habits of spotted hyenas in a woodland habitat;Bearder;East African Wildlife Journal,1977
5. The taphonomy and paleoecology of the Plio-Pleistocene vertebrate assemblages east of Lake Rudolf, Kenya;Behrensmeyer,1973