1. E. Andrási, M. Mohos, L. Bezur, and Zs. Molnár,Trace Element Analytical Chemistry in Medicine and Biology, vol. 5., Walter de Gruyter, Berlin, New York, p. 261, 1988.
2. T. Bereznai, D. Bódizs, and G. Keömley,J. Radioanal. Chem. 36 (1977).
3. L. Bezur, L. Ernyei, and E. Pungor, Abstracts, Winter Conference on Plasma and Laser Spectrochemistry, Lyon, p. 241 (1987).
4. W. D. Ehmann, W. R. Markesbery, M. Alauddin, T. I. M. Hossain, and E. H. Brubaker,Neurotoxicology 7/1 197–206 (1986).
5. C. M. Thompson, W. R. Markesbery, W. D. Ehmann, Y-X. Mao, and D. E. Vance,Neurotoxicology 9/1 1–8 (1988).