1. The 'Direct Costs'of Livestock Disease: The Development of a System of Models for the Analysis of 30 Endemic Livestock Diseases in Great Britain
2. Department for Environment, Food and Rural Affairs (2003 ).Outline of an Animal Health and Welfare Strategy for Great Britain. London: Defra.
3. Department for Environment, Food and Rural Affairs (2004 ). Animal Health and Welfare Strategy for Great Britain . London: Defra.
4. Department for Environment, Food and Rural Affairs (2004 ). Animal Health and Welfare Strategy for Great Britain: The Evidence Base. A Work in Progress London: Defra.