1. Trace Elements in Soils and Plants
2. U.S. Environmental Protection Agency. 1999. 402-r-99-004b ch5a. Review of Geochemistry and Available Kd Values for Cadmium, Cesium, Chromium, Lead, Plutonium, Radon, Strontium, Thorium, Tritium (3H), and Uranium. United States Environmental Protection Agency, Office of Air and Radiation, Volume II
3. Toxic and mutagenic effects of chromium(VI). A review