1. Clinical signs and pathology shown by British sheep and cattle infected with bluetongue virus serotype 8 derived from the 2006 outbreak in northern Europe;Darpel;Veterinary Record,2007
2. DEFRA 2007a Bluetongue btv-8 in Europe, 1 April to 21 September 2007 www.defra.gov.uk/animalh/diseases/notifiable/pdf/bt-map0807.pdf
3. DEFRA 2007b Bluetongue disease contingency plans for Great Britain www.defra.gov.uk/animalh/diseases/pdf/bluetongue-contplan.pdf
4. DEFRA 2007c Declaration of a control zone and protection zone www.defra.gov.uk/animalh/diseases/notifiable/bluetongue/pdf/declaration-bt-pzcz290907.pdf
5. DEFRA 2007d Bluetongue: clinical signs www.defra.gov.uk/animalh/diseases/notifiable/bluetongue/farmers/clinical-signs.htm