L. Kusiluka, D. Kambarage, L. Harrison, C. Daborn, and R. Matthewman, “Gastrointestinal Nematodosis in Goats Kept Under the Tethering, Stall-Feeding and Pastoral Management Systems in Two Ecoclimatic Areas In Morogoro District, Tanzania”, Tanz Vet J, vol. 19, no. 1, pp. 6–15, Mar. 1999.