Salih, Aymen M. Mohammed, Zolfgar Ramdan Hassan, and Sulieman Mohamed El Sanousi. 2011. “Antimicrobial Activity of Selected Probiotic Bacteria Isolated from Sudanese Traditional Dairy Product ‘Rob’”. Pakistan Journal of Nutrition 10 (7): 637–639. https://doi.org/10.3923/pjn.2011.637.639.