Geochemical composition of source obsidians from Kenya B.P. Nash, Harry V. Merrick, Diego P. Fernandez, R.J. Thomas, F.H. Brown • 2013
Obsidian types from Holocene sites around Lake Turkana, and other localities in northern Kenya B.P. Nash, Harry V. Merrick, F.H. Brown • 2011
Geochemical sources for the terminal Pleistocene/early Holocene obsidian artifacts of the site of Beseka, central Ethiopia B.P. Nash, Agazi Negash, Mulugeta Alene, M.S. Shackley, F.H. Brown • 2007