Kerie, Y., and Z. Seyoum. “Bovine and ovine schistosomiasis: prevalence and associated host factors in selected sites of South Achefer district, northwest Ethiopia”. The Thai Journal of Veterinary Medicine, vol. 46, no. 4, Jan. 2017, pp. 561-7, https://he01.tci-thaijo.org/index.php/tjvm/article/view/73778.