1. Arkell, A.J., (1949). The Old Stone Age in the Anglo-Egyptian Sudan. Sudan Antiquities Service Occasional Papers, 1, Khartoum.
2. Central Africa and the emergence of regional identity in the Middle Pleistocene;Barham,2001
3. Nouvelles fouilles à la pointe de la Gombe (expointe de Kalina); Kinshasha, Zaire;Cahen;L'Anthropologie,1976
4. Early and Middle Paleolithic sites near Arkin, Sudan;Chmielewski,1968