Kabuni, K., D. Masao, R. Laven, and T. Parkinson. “Comparison of Fixed-Time Artificial Insemination and Natural Mating on Pregnancy Rates in Mpwapwa Breed Cattle”. Tanzania Veterinary Journal, vol. 36, no. 2, Feb. 2022, pp. 24-34, doi:10.4314/tvj.v36i2.3.