W. O. M.-K. Ebrahim, A. A. M. Elfadil, and A. A. Elgadal, “Seroprevalence and risk factors of anti-brucella antibodies in cattle in Khartoum State, the Sudan”, J. Adv. Vet. Anim. Res, vol. 3, no. 2, pp. 134–144, Jul. 2016.