1. N.N. Greemwood, A. Earnshow, Chemistry of Elements, Pergamon Press, New York, 1984.
2. C.A. Burtis, E.R. Ashwood, Textbook of Clinical Chemistry, 2nd Edition, Saunders, Philadelphia, 1994.
3. B. Wetz, Atomic Absorption Spectroscopy, VCH, Amsterdam, 1985.
4. A.D. Eaton, L.S. Clesceri, A.E. Greenberg, Standard Methods for the Examination of Water and Waste Water, 19th Edition, American Public Health Association, Washington, DC, 1995.
5. F.J. Welcher, E. Boschmann, Organic Reagents for Copper, Krieger, Huntington, New York, 1979.