1. IAEA, Activation Analysis of Hair as an Indicator of Contaimination of Man of Environmental Trace Pollutants, Report IAEA/RL/50, Vienna, 1978.
2. C. A. Pankhurst, B. D. Pate, in: Reviews in Analytical Chemistry, Vol. IV, Nos 2–3, Freund Publish. Company, Tel Aviv, Israel, 1979, 111.
3. A. C. Alfrey, H. Rudolph, W. R. Smythe, Mineral Metabolism in Uremia. Kidney int., suppl. 2 /1975/ 85.
4. R. Cornelis, L. Mees, R. Ringoir, J. Hoste, Mineral and Electrolyte Metabolism, 2 /1979/ 88.
5. R. Cornelis, S. Ringoir, N. Lameire, L. Mees, J. Hoste, Mineral and Electrolyte Metabolism, 2 /1979/ 186.