1. Abd El-Rahim, I.H.A., El-Hakim, U.A., Hussein, M., 1999. An epizootic of Rift Valley fever in Egypt in 1997, Revue Scientifique et technique de l’Office International des Epizooties, 18, 741–748
2. Ahmad, K., 2000. More deaths from Rift Valley fever in Saudi Arabia and Yemen, Lancet, 356, 1422
3. Aklilu, Y., 2002. An Audit of the Livestock Marketing Status in Kenya, Ethiopia and Sudan. Volume II: Issues and Proposed Measures,(unpublished report, Community-Based Animal Health and Participatory Epidemiology Unit, Pan African Programme for the Control of Epizootics, Animal Resources, Nairobi, Kenya)
4. Alabsi, A.A., 2006. Yemen profile, ( http://www.fao.org/ag/AGP/AGPC/doc/Counprof/Yemen/yemen.htm )
5. Alary, V., 2006. Etude du commerce régional du bétail et des produits animaux en Afrique de l’Ouest (zone ECOWAS) et Afrique de l’Est (zone IGAD), (unpublished CIRAD report for FAO, CIRAD, Montpellier)