Z. K. Jalob, M. A. Al-Noori, and N. H. Ismail, “The effect of Gonadotroph in releasing hormone (GnRH ) in the reproductive traits of layer chickens”, KUFA J Vet Med Sci, vol. 1, no. 2, pp. 97–103, Dec. 2010, doi: 10.36326/kjvs/2010/v1i24057.