Zebaria, H., H. Hidayet, A. Al-Naqshabendy, N. Hussein, and N. Kakarash. “Pain Caused by Ear Tagging in Kids of Native Black Goats”. Science Journal of University of Zakho, Vol. 9, no. 1, Mar. 2021, pp. 15-19, doi:10.25271/sjuoz.2021.9.1.781.