Liu, J., Cai, J.Z., Zhang, W., Liu, Q., Chen, D., Han, J.P., Liu, Q.R. (2008)Seroepidemiology of Neospora caninum and Toxoplasma gondii infection in yaks (Bos grunniens) in Qinghai, China, Vet Parasitol. , 152(3-4), pp. 330-2.