1. Alemayehu, L., 1990. Prevalence of hydatidosis is cattle, sheep, goats and echinoccosis in dog in Arsi. DVM Thesis. Addis Ababa University, Faculty of Veterinary Medicine, Debre Zeit, Ethiopia (unpublished).
2. FAO/UNEP/WHO Guideline for Surveillance Prevention and Control of Echinococcosis/hydiatidosis;Anon,1981
3. Ararso, O., 1997. The prevalence of hydatidosis in and around Assela. DVM Thesis. Addis Ababa University, Faculty of Veterinary Medicine, Debre Zeit, Ethiopia (unpublished).
4. Asrat, G., 1996. Prevalence and economic significance of hydatidosis/Echinococcosis/in slaughtered cattle, sheep and got in South Wollo. DVM Thesis. Addis Ababa University, Faculty of Veterinary Medicine, Debre Zeit, Ethiopia (unpublished).
5. Epidemiological study of the cystic echinococcosis in Morocco;Azlaf;Vet. Parasitol.,2006