A. Umaru, M., H. S. Garba, J. B. Adeyanju, A. . Bello, E. O. Oyedipe, and S. . Buhari. “Oestrus Synchronization and Superovulation in the Red Sokoto Doe (RSD) in Sokoto, Nigeria”. Scientific Journal of Zoology, vol. 2, no. 1, Jan. 2013, pp. 6-11, https://www.sjournals.com/index.php/sjz/article/view/1175.