1. A survey of cowpea cropping systems in some districts of Uganda;Adipala;African Crop Science Proceedings,1997
2. Allen, R.G., Pereira, L.S., Raes, D. and Smith, M., 1998. Crop evapotranspiration. Guidelines for computing crop water requirements. FAO Irrigation and drainage paper 56. FAO, Rome. http://www.fao.org/docrep/X0490E/x0490e06.htm#equation
3. Increasing water productivity in crop production: a synthesis;Ali;Agricultural Water Management,2008
4. Determination of evapotranspiration and basal coefficient of alfalfa with a weighing lysimeter;Benli;Agricultural Water Management,2006
5. Robert E. Horton's perceptual model of infiltration processes;Beven;Hydrological Processes (John Wiley and Sons),2004