Tsegay, Amanuel, et al. “Seroprevalence and Risk Factors of Brucellosis in Small Ruminants Slaughtered at Debre Ziet and Modjo Export Abattoirs, Ethiopia”. The Journal of Infection in Developing Countries, vol. 9, no. 04, Apr. 2015, pp. 373-80, doi:10.3855/jidc.4993.