1. Alexander, D.J., 1991. Newcastle disease. In: Rweyemamu, M.M., Palya, V., Tin Win (Eds.), Proceedings of a Workshop on Newcastle Disease Vaccines for Rural Africa, 1991. Pan African Veterinary Vaccine Centre, Debre Zeit, Addis Ababa, Ethiopia, pp. 7–45.
2. A standard haemagglutination — inhibition test for Newcastle disease: 1. A comparison of macro- and micro-methods;Allan;Vet. Rec.,1974
3. Anon, 1994. National sample census of agriculture 1993/94, Tanzania Mainland reports, vol. II. Statistics Unit, Ministry of Agriculture and Bureau of Statistics, Planning Commission, July 1994, Dar es Salaam, Tanzania, 55 pp.
4. A controlled vaccination trial for Newcastle disease under village conditions;Bell;Prev. Vet. Med.,1990
5. A field trial of a heat resistant V4 against Newcastle disease by eye-drop inoculation in village poultry in Cameroon;Bell;Prev. Vet. Med.,1995