1. Diseases of the skin;Barbet,1991
2. Overview of equine papular and nodular dermatoses;Fadok;Vet Clin N Am Equine Pract,1995
3. Collagenolysis: “It ain't easy being pink.”;Fairley;Vet Pathol,1991
4. Fitzpatrick's Dermatology in General Medicine V;Freedberg,1999
5. Veterinary and Comparative Dermatology;Kral,1964