1. Active tectonic control on alluvial architecture;Alexander;Society of Economic Paleontologists and Mineralogists Special Publication,1987
2. Studies in fluviatile sedimentation: implications of pedogenic carbonate units, lower old red sandstone, Anglo-Welsh outcrop;Allen;Geological Journal,1974
3. Assefa, A., Wolela, A., The Geology and Coal Occurrences of Arjo, Wellega. Unpublished report, Ministry of Mines and Energy, Addis Ababa. (1986) p. 18.
4. Interactive processing of satellite images for structural and lithological mapping in northeast Africa;Berhe;Geological Magazine,1986
5. Palaeozoic sedimentary basin of Mekele Outlier, Northern Ethiopia;Beyth;American Association of Petroleum Geologists Bulletin,1972