1. Alexander RA (1931) Heartwater. The present state of our knowledge of the disease. 17th Report of the Director of Veterinary Services and Animal Industry, Union of South Africa, pp 89–150
2. Andrew HR, Norval RAI (1989) The role of males of the bont tick Amblyomma hebraeum in the transmission of Cowdria ruminantium. Vet Parasitol 34:15–23
3. Beati L, Kelly PJ, Matthewman LA, Raoult D (1995) Prevalence of rickettsia-like organisms in ticks collected around Zimbabwe. J Med Entomol 32:787–792
4. Bezuidenhout JD, Malherbe A (1981) Sweating sickness: a comparative study of virulent and avirulent strains of Hyalomma truncatum. In: Whitehead GB, Gibson JD (eds) Tick biology and control. Proceedings of an international conference, 27–29 January 1981, Rhodes University, Grahamstown, pp 7–12
5. Bishop GC (2004) Borrelia theileri infection. In: Coetzer JAW, Tustin RC (eds) Infectious diseases of livestock. Oxford University Press, Cape Town, pp 1435–1436