A. H. S. Mohammed, D. A. H. Kadium, and A. K. Ebed, “Some morphometric and histological description of the seminiferous ,striaghted and rete testis tubules in the testis of indogenous male goats (two years old)”, Kufa Jou. Vete. Med. Sci., vol. 2, no. 1, pp. 19–29, Jun. 2011.