1. Blood, D. C., and Studdert, V. P.  Saunders Comprehensive Veterinary Dictionary, 2nd Ed.  1999.  WB Saunders.  Toronto.
  2. Campbell, K.L. The Pet Lover's Guide to Cat & Dog Skin Diseases.  Elsevier, St. Louis, 2006 pp.373-5.
  3. Campbell, K.L. Small Animal Dermatology Secrets. Hanley & Belfus, Philadelphia, 2004. pp 184-5.
  4. Carter,G.R., and D.J.Wise. Papillomaviridae: A Concise review of Veterinary Virology International Veterinary Information Service, Ithaca NY (, Last updated: 9-Jun-2005; A3412.0605
  5. Castro, A. E., and Heuschele, W. P.  1992.  Veterinary Diagnostic Virology, A Practitioners Guide.  Mosby-year Book Inc.  Pages 171-177.
  6. Chambers, G., Ellsmore, V. A., O'Brien, P.M., Reid, S. W. J., Love, S., Campo, M. S. and Nasir, L.  2003.  Sequence variants of bovine papillomavirus E5 detected in equine sarcoids.  Virus Research 96:141-145.
  7. DeBey, B.M., Baglidi-Swanson M., Kapil S., and Frederick W. Oehme. Digital papillomatosis in a confined Beagle. J Vet Diagn Invest 13:346-348(2001)
  8. Lassauzet, M.L. and Salamin, P.A.  1993.  Lack of effect of recombinant bovine interferon alpha in the treatment of experimentally-induced bovine warts.  Canadian Journal of Veterinary Research.  57:166-169.
  9. Murphy, F.A., Gibbs, E.P.J., Horzinek, M.C. and M. J. Studdert.  Veterinary Virology, 3rd Ed.  Academic press. 1999.  Pages 339-341.
  10. Pascoe, R. R .R., Knottenbelt, D. C., and Saunders, W.B.  1999.  Manual of Equine Dermatology.  Harcourt and Brace Company ltd.  Pages 24-28.
  11. Postey, R.C., Appleyard, G.D., and Kidney, B.A.  Evaluation of equine papillomas, aural plaques, and sarcoids for the presence of Equine papillomavirus DNA and Papillomavirus antigen.  2007.   Canadian  Journal of Veterinary Research.  71:28-33. 
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  13. Radostits, O. M., Gay, C. C., Hinchcliff, K. W. and P.D. Constable.  Veterinary Medicine: A textbook of the diseases of cattle, horses, sheep, pigs, and goats, 10th Ed.  Saunders Elsevier.  2007.  Pages 1421-1424.
  14. Scott, D. W.  Large Animal Dermatology.  1988.  WB Saunders Company Ltd.