W. A. Marajan, M. A. Hadad, Gafer3M. O., K. M. Khalifa, S. A. Hatim, and M. A. Abdelrhman, “Influence of Bio-organic Fertilizers on Tomato Plants Growth under Deep Tillage Preparation in Western Omdurman Soil”, JAR, vol. 3, no. 8, pp. 61-73, Aug. 2017.