Khalifa, Ahmed, 		Ali, Mohamed, 		Sijali, I. V., 		Yagoub, Adil, 		Eljali, Mohmed, AND 		Ali, Abdelgadir.
" Installation of a family drip irrigation system for the improvement of the livelihood of small-scale farmers in comparison with surface irrigation" <em>Gezira Journal of Agricultural Science</em> [Online], Volume 12 Number 2 (1 January 2014)