1. H. J. M. Bowen, in Trace Elements in Biochemistry, Chapters 7, 8, and 11, Academic Press, 1966.
2. K. T. Smith, ed,Trace Minerals in Foods, Marcel Dekker Inc., 1988.
3. A. Berlin, A. H. Wolff, and Y. Hasegawa,Proceedings of the International Workshop at Luxembourg, April 18–22, 1977. Martinus Nijhoff Publishers, 1979.
4. G. Zhuang, Y. Cheng, M. Tan, Y. Wang, and M. Zhi,J. Radioanal. Nucl. Chem. Articles 149, 305–315 (1991).
5. S. A. Katz and A. Chatt, inHair Analysis: Applications in the Biomedical and Environmental Sciences, VCH, 1988, pp. 37–47.