Sharma, S.P.; Baipoledi, E.K.; Nyange, J.F.C.; Tlagae, L.(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2003)
Nsoso, S.J.; Senku, M.M.; Mine, O.M.(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2001)