1. M. Behne, S. Scheid, H. Hilmert, H. Gessner, D. Gawlik, and A. Kyriakopoulos,Nuclear Analytical Methods in the Life Sciences, R. Zeisler and V. P. Guinn, eds., Humana Press, Clifton, NJ, 1990, p. 439–448.
2. Keshan Disease Research Group,Chinese Med. J. 92, 471 (1979).
3. J. B. Tian, Study of analytical methods and biological effect of essential trace element Se, Master's dissertation, IHEP, Beijing, 1990.
4. J. A. Tan,J. environ. Sci. 1, 107 (1989).
5. D. Rai, and J. Zachara, Report EA-3356, EPRI by Pacific Northwest Lab. (Battle Institute), Richland, WA, 1984.