M. M. Mahmood, M. A. W. Abdul-AL-Mounam, and B. R. Faraj, “Detection of Bacterial and Fungal Contaminants of the Imported Semen Straws Used for Cows”, Kufa Jou. Vete. Med. Sci., vol. 4, no. 1, pp. 23–30, Jun. 2013.