Swan, Gerry E.; Schultz, R.A. (Rowena Anitra); Kellerman, T. Stephanus; Mulders, M.S.G.; Maartens, B.P.; Van der Walt, J.J.(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1995)
Hunter, P.; Erasmus, B.J.; Vorster, J.H. (Jan Harm)(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2002)
Elkan, P.W.(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2001)