Khalifa, A., 		Hamed, I., 		Ahmed, S., 		Ali, M., 		Ahmed Ali, I., 		Heng, L., & 		Bakheit, S.
2017 Dec  1.  Effects of bubbler irrigation frequency on yield and quality of foster grapefruit under Khartoum State conditions. المجلة الزراعية. [على الإنترنت] 15:2