M. O. Sallum and S. Z. Ali, “EFFECT OF AGRICULTURE SULFUR UNDER FLOOD AND DRIP IRRIGATION SYSTEM ON A VAILABILITY AND UPTAKE OF PHOSPHOURS ELEMENT AND GROWTH OF CAULIFLOWER (Brassica olerarcea L.). ”, DASJ, vol. 3, no. 2, pp. 457–467, Dec. 2011.