Anderson, DE (1991). Genetic Study of Eye Cancer in Cattle. Journal of Heredity 83, 21-26.
Del Fava, C; Verissimo, CJ; Rodrigues, CFC; Cunha, EA; Ueda, M; Maiorka, PC and D´Angelino, JL (2001). Occurrence of squamous cell carcinoma in sheep from
a farm in Sao Paulo State, Brazil. Arquivos do Instituto Biologico Sao Paulo 68, 35-40.
Divers, TJ and Peek, SF (2007) Rebhun's diseases of dairy cattle. 2nd edn., Saunders & Elsevier, St. Louis, p.304.
Gilger, BC; Whitley, RD and McLaughlin, SA (1991). Bovine ocular squamous cell carcinoma: a review. Veterinary Annual 13, 73-84.
Goldschmidt, MH and Hendrick MJ (2002). Tumors of the skin and soft tissues. In Tumors in Domestic Animals, 4th edn.Eds D. J. Meuten, Iwa State Press,
Ames, pp 45-118.
Ladds, PW and Entwistle, KW (1977).Observation on squamous cell carcinomas of sheep in Queensland,
Australia. British Journal of Cancer 35, 110-114.
Ladds, PW and Daniels, PW (1982) Animal model of human disease: Squamous cell carcinoma. American Journal of Pathology 107, 122-123.
Lioyd, LC (1961). Epithelial tumors of the skin of sheep. British Journal of Cancer 15, 780-789.
Mendez, Aan; Perez, J; Ruiz-Villamor, E; Garcia, R; Martin, MP and Mozos, E (1997). Clinicopathological study of an
outbreak of squamous cell carcinoma in sheep. Veterinary Record 141, 597-600.
Scott, DW (1988). Large Animal Dermatology. Saunders, Philadelphia, pp. 429-431.
Swan, RA; Chapman, HM; Hawkins, CD; Howell, JMcC and Spalding, VT (1984). The epidemiology of squamous
cell carcinoma of the perineal region of sheep: Abattoir and flock studies. Australian Veterinary Journal 61, 146-
Vanselow, BA and Spradbrow, PB (1983). Squamous cell carcinoma of the vulva, hyperkeratosis and papillomaviruses in a ewe. Australian Veterinary Journal