References
- Fernández , V.M. , De La Torre , I , Luque , L. , González-Ruibal , A. and López-Sáez , J.A. 2007 . A Late Stone Age sequence from West Ethiopia: The sites of K'aaba and Bel K'urk'umu (Assosa, Benishangul-Gumuz Regional State) . Journal of African Archaeology , 5 : 91 – 126 .