1. Budd, L.T. (1999) DFID-Funded Tsetse and Trypanosomiasis Research and Development Since 1980 (Vol. 2, Economic Analysis), Dept for International Development, London
2. Geerts S. Holmes P.H. (1998) PAAT Technical and Scientific Series (Vol. 1), Food and Agriculture Organization. Italy
3. Trypanosomiasis Control and African Rural Development;Jordan,1986
4. Anon (1997) PAAT Planning Workshop, Montpellier, April 1997, Food and Agriculture Organization, Italy