1. Stika, K.M. and Morrison, G.H. (1981) Analytical methods for the mineral content of human tissues. Fed. Proc., 40, 2115–20.
2. Elemental Analysis of Biological Materials. (1980) Current problems and techniques with special reference to trace elements. International Atomic Energy Agency (IAEA), Vienna, Tech. Rept. Series No. 197.
3. Riordan, J.F. and Vallee, B.L. (1988) Metallobiochemistry, in Methods in Enzymology, (eds J.N. Abelson and M.I. Simon), Vol. 158, Academic Press, New York.
4. Versieck, J. and Cornelis, R. (1980) Normal levels of trace elements in human plasma or serum. Anal. Chim. Acta, 116, 217–54.
5. Versieck, J. (1985) Trace elements in human body fluids and tissues. CRC Crit. Rev. Clin. Lab. Sci., 22, 97–184.