Barbetti M, Clark JD, Williams FM, Williams MAJ
Palaeomagnetism and the Search for very Ancient Fireplaces in Africa: Results From a Million-Year-Old Acheulian Site in Ethiopia
Clark JD, Kurashina H
New Plio-Pleistocene Archaeological Occurrences from the Plain of Gadeb, Upper Webi Shebele Basin, Ethiopia, and a Statistical Comparison of the Gadeb Sites with other Early Stone Age Assemblages