1. Chromium;Gauglhofer,1991
2. EPA-745-R-99-001, 33/50 Program, March 1999.
3. Mandatory environmental compliance for the restriction of hazardous substances acc. to RoHS/WEEE (EU Directives 2002/95/EC and 2002/96/EC)
4. Chromium(III) forms a thiolate complex with glutathione;Brauer;J. Am. Chem. Soc.,1991
5. Toxic Metals and their Analysis;Berman,1980