Gabriel, Sarah; Phiri, I.K.; Dorny, P.; Vercruysse, J.(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2001)
Botha, C.J. (Christoffel Jacobus); Van der Lugt, Jaco J.; Erasmus, G.L.; Kellerman, T. Stephanus; Schultz, R.A. (Rowena Anitra)(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1997)
Stenson, M.O.; Van der Merwe, J.S.; Vorster, R.J.; Viljoen, P.G.(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)