References
- Giangaspero , M. , Wellemans , G. , Vanopdenbosch , E. , Belloli , A. and Verhulst , A. 1988 . Bovine viral diarrhoea . Lancet , ii : 110 – 110 .
- Wilks , C.R. , Abraham , G. and Blackmore , D.K. 1989 . Bovine pestivirus and human infection . Lancet , i : 107 – 107 .