Mujuni, P., F. Mgongo, E. Batamuzi, and N. Kanuya. “Influence of Production on Health and Reproductive Performance of Dairy Cattle in a Selected Area of Tanzania”. Tanzania Veterinary Journal, vol. 10, no. 3, Sept. 1990, pp. 90-97, http://tvj.sua.ac.tz/vet2/index.php/TVJ/article/view/362.