1. Circulation of African horse sickness virus in zebra (Equus burchelli) in the Kruger National Park, South Africa, as measured by the prevalence of type specific antibodies;Barnard;Onderstepoort J. Vet. Res.,1998
2. Prevalence of antibodies against equine viruses in zebra (Zebra burchelli) in the Kruger National Park 1991–1992;Barnard;Onderstepoort J. Vet. Res.,1993
3. Evaluation of the critical parameters of a sensitive ELISA test using purified infectious bovine rhinotracheitis antigen;Bolton;Vet. Microbiol.,1981
4. African horse sickness surveillance systems and regionalisation/zoning, the case of South Africa;Bosman;Rev. Sci. Tech. Off. Int. Epiz.,1995
5. Vaccines against viral diseases. Onderstepoort Biological Products;Botha,1996