1. Abdelkadir A. and Schultz R.C. in press. Biomass and distribution of Acacia saligna, Gliricidia sepium and sorghum bicolor (var. seredo) roots in an agroforestry system in the Hararghe highlands of Ethiopia. Journal of Tropical Forest Sciences.
2. Abdelkadir A. 1997. Root production, soil organic matter, soil moisture and sorghum yield in an Alley-cropping system with A. saligna and Gliricidia sepium in the Hararghe highlands, eastern Ethiopia. PhD Dissertation. Iowa State University 101 pp.
3. A review of rainwater harvesting
4. Micro-Catchment-Water-Harvesting (MCWH) for arid zone development
5. Rainwater-harvesting agriculture for food production in arid zones: the challenge of the African famine