References
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- Koops K., McGrew W.C., Matsuzawa T. 2010 Do Chimpanzees (Pan Troglodytes) Use Cleavers and Anvils to Fracture Treculia Africana Fruits? Preliminary Data on a New Form of Percussive Technology. Primates 51(2): 175–178.
- Roux V.,, Bril B. 2005 Stone Knapping: The Necessary Preconditions for a Uniquely Hominin Behaviour. McDonald Institute for Archaeological Research, University of Cambridge, Cambridge.
- Wright R.V.S. 1972 Imitative Learning of a Flaked Stone Technology: The Case of an Orangutan. Mankind 8(4): 296–306.
- Wynn T., Hernandez-Aguilar R.A., Marchant L.F., McGrew W.C. 2011 ‘An Ape’ View of the Oldowan' Revisited. Evolutionary Anthropology 20(5): 181–197.