Berkvens, D. L., Billiouw, M., Brandt, J. R. A., Geysen, D. M., Marcotty, T., Mulumba, M., & Speybroeck, N. (1997). The Asveza-project in Zambia. Newsletter on Ticks and Tick-borne Diseases of Livestock in the Tropics, 4, 2-4. https://hdl.handle.net/2078.5/48150 (Original work published 1997)