H. Musa, A. Suleiman, T. Lanyasunya, O. Olowofeso, and D. Mekki, “Feeding Practices, Growth Rate and Management of Ostrich Chicks in Sudan”, Pak. J. Nutr., vol. 4, no. 3, pp. 154–157, Apr. 2005, doi: 10.3923/pjn.2005.154.157.