1. Domenech, J. (1977).Revue d'Elevage et de Médicine Vétérinaire des Pays Tropicaux,30, 141–142.
2. Morgan, W. J. B., MacKinnon, D. J., Gill, K. P. W., Gower, S. G. M. & Norris, P. I. W. (1978). Standard techniques for the diagnosis of brucellosis,MAFF, 2nd edn, UK.
3. Mustafa, A. A. & Awad Elkarim, M. H. (1971).Sudan Journal of Veterinary Science and Animal Husbandry,12, 5–8.
4. Okoh, A. E. J. (1979).Tropical Animal Health and Production,11, 213–214.
5. Radwan, A. I., Asmar, J. A., Frerichs, W. M., Bekairi, S. I. & Al-Mukayel, A. A. (1983).Tropical Animal Health and Production,15, 139–143.