S. Semaw u. a.: 2.5-million-year-old stone tools from Gona, Ethiopia. In: Nature, Band 385, 1997, S. 333–336, doi:10.1038/385333a0.
Shannon P. McPherron u. a.: Evidence for stone-tool-assisted consumption of animal tissues before 3.39 million years ago at Dikika. In: Nature, Band 466, 2010, S. 857–860, doi:10.1038/nature09248
Giday WoldeGabriel et al.: The Geological, Isotopic, Botanical, Invertebrate, and Lower Vertebrate Surroundings of Ardipithecus ramidus. Science, Band 326, 2009, S. 65, doi:10.1126/science.1175817.
Ernesto Abbate, Andrea Albianelli, Augusto Azzaroli et al.: A one-million-year-old Homo cranium from the Danakil (Afar) Depression of Eritrea. In: Nature. Band 393, 1998, S. 458–460, doi:10.1038/30954