N. Sabiiti, E., D. Mpairwe, M. S. Rwakaikara, and S. Mugasi. “Restoration of Degraded Natural Grasslands to Enhance Soil Fertility, Pasture and Animal Productivity”. Uganda Journal of Agricultural Sciences, vol. 9, no. 1, Sept. 2004, pp. 466-9, http://journal.naro.go.ug/index.php/ujas/article/view/253.