Young, N. J., Thomas, C. J., Collins, M. E., & Brownlie, J. Real-time RT-PCR detection of Bovine Viral Diarrhoea virus in whole blood using an external RNA reference. JOURNAL OF VIROLOGICAL METHODS, 138(1-2), 218-222. https://doi.org/10.1016/j.jviromet.2006.08.008