Khalifa, Ahmed, 		Hamed, Ibtihal, 		Algali, Mohamed, 		Ahmed, Shaker, 		Ali, Ali, 		Babiker, Ebtehag, 		Ali, Mohamed, AND 		Heng, Lee.
" Effect of micro sprinkler irrigation intervals on onion (Allium cepa L.) production compared to surface irrigation under Kassala conditions, Sudan" <em>Gezira Journal of Agricultural Science</em> [Online], Volume 16 Number 2 (1 December 2018)