1. Anke, M., Grün, M., Dittrich, G., Groppel, B., and Hennig, A., 1974, Low nickel rations for growth and reproduction in pigs, in Trace Element Metabolism in Animals-2 ( W. G. Hoekstra, J. W. Suttie, H. E. Ganther, and W. Mertz, eds.), pp. 715–718, University Park Press, Baltimore.
2. Anke, M., Grün, M., and Partschefeld, M., 1976, The essentiality of arsenic for animals, Trace Subst. Environ. Health
10: 403.
3. Anke, M., Hennig, A., Grün, M., Partschefeld, M., Groppel, B., and Lüdke, H., 1977, Nickel-ein essentielles Spurenelement, Arch. Tierernährung
27: 25.
4. Anke, M., Grün, M., Partschefeld, M., Groppel, B., and Hennig, A., 1978, Essentiality and function of arsenic, in Trace Element Metabolism in Man and Animals-3 ( M. Kirchgessner, ed.), pp. 248–252, Universität München, Freising-Weihenstephan.
5. Berg, L. R., 1966, Effect of diet composition on vanadium toxicity for the chick, Poult. Sci.
45: 1346.