1. Soil ingestion by sheep grazing the metal enriched floodplain soils of mid-Wales;Abrahams P.W.;Environmental Geochemistry and Health,2003
2. Alfrey A.C. (1986) Aluminium. In: Mertz W. (ed.) Trace Elements in Human and Animal Nutrition . Academic Press, New York, pp. 399–413.
3. Allcroft R. , Burns K.N. and Hebert C.N. (1965) Fluorosis in Cattle. 2. Development and Alleviation: Experimental Studies . Animal Disease Surveys Report No. 2, Part 2. HMSO, London.
4. Effects of ingested aluminium sulfate on serum magnesium and the possible relationship to hypomagnesaemic tetany;Allen V.G.;Nutrition Reports International,1984
5. Influence of ingestion of aluminium, citric acid and soil on mineral metabolism of lactating beef cows;Allen V.G.;Journal of Animal Science,1986