1. Discussion [of Berhe 1990];Abdelsalem;J. Geol. Soc. London,1991
2. U-Pb and Rb-Sr geochronology of the Western Ethiopian Shield;Ayalew;Bull. Geol. Soc. Am.,1990
3. Geology of the Baragoi area;Baker;Rep. Geol. Surv. Kenya,1963
4. The Precambrian of Kenya;Baker;Rep. Geol. Surv. Kenya,1965
5. A geological reconnaissance of the area south-east of Embu;Bear;Rep. Geol. Surv. Kenya,1952