1. Predicting the risk of cobalt deprivation in grazing livestock from soil composition data;SUTTLE, N.F.; THORNTON, I.; AGYRIAKI, A.;Environmental Geochemistry and Health; Copper deficiency or molybdenum toxicity - diagnosis and treatment requires a new perspective,2002
2. A review of selenium deficiency in grazing ruminants 2: towards a more rational approach to diagnosis and prevention;Garnsworthy, P.C.; WICHTEL, J.J.;New Zealand Veterinary Journal,1998
3. Growth responses to increasing doses of micro-encapsulated vitamin B12 and related changes in tissue vitamin B12 concentrations in cobaltdeficient lambs. New Zealand Veterinary;reading GRACE, Further; D., N.; KNOWLES, S.O.; SINCLAIR, G.R.; LEE, J.;Journal; Experimental reproduction of iodine deficiency in cattle,2003