1. Ngamuna S et al. 1988. Trypanosomiasis in N'Dama cattle under village management in Zaire. In: Livestock Production in Tsetse Affected Areas in Africa. ILCA/ILRAD Nairobi Kenya 119-124.
2. Murray M et al. 1979. Trypanotolerance - a review. World Animal Review 31:2-12.
3. Trail JCM et al. 1988. Genetic aspects of criteria of trypanotolerance. In: Livestock Production in Tsetse Affected Areas in Africa. ILCA/ILRAD Nairobi Kenya 433-439.
4. Fall A et al. 1982. Evaluation of the productivities of Djallonke sheep and N'Dama cattle at the Centre de Recherches Zootechniques Kolda Senegal. ILCA Research Report No. 3. International Livestock Centre for Africa Addis Ababa Ethiopia.
5. Agyemang K Clifford D Little DA 1993. An assessment of the biological and economic efficiency in conversion of milk to growth in N'Dama calves. Animal Production 56(2):165-170; 16 ref.