1. Factors affecting fire extent and frequency in the Bale Mountains National Park;Abera,2011
2. The status of the ericaceous vegetation on the southern slope of the Bale Mountains;Assefa,2011
3. Altitudinal variation and conservation priorities of vegetation along the great Rift Valley escarpment, northern Ethiopia;Aynekulu;Biodiversity and Conservation,2012
4. Geology of the Eastern Rift System of Africa;Baker,1972
5. The Kashiru sequence (Burundi): Palaeo-climatic implications for the last 40,000 yr BP in tropical Africa;Bonnefille;Quaternary Research,1988