Hasan AL-Mutar, Hayder. “Investigation the Polymorphism of Gonadotropin Releasing Hormone Receptor Gene in Iraq Sheep”. The Iraqi Journal of Veterinary Medicine 41, no. 1 (June 5, 2017): 138-144. Accessed August 15, 2021. https://jcovm.uobaghdad.edu.iq/index.php/Iraqijvm/article/view/96.