1. Observations on the variation in the liver copper levels of lambs;Adamson,1983
2. The Nutrient Requirements of Ruminant Livestock;ARC (Agriculture Research Council),1980
3. Growth and development of lambs;Black,1983
4. Blood, D.C., Radostits, O.M., 1989. Veterinary Medicine. A Textbook of the diseases of Cattle, Sheep, Pigs, Goats and Horses, 7th ed., pp. 1160–1175; 1264–1268. Baillière Tindall. London.
5. Copper toxicity in defaunated sheep;Dayrell;Nutrition Abstracts and Reviews Series,1994