1. S. E. Lindberg and W. J. Stratton, Environ. Sci. Technol., 32, 49 (1998).
2. C. C. Travis and B. P. Blaylock, Toxicol. Environ. Chem., 49, 203 (1995).
3. U. S. Government Printing Office, Mercury study report to congress, Washington, DC (1997).
4. U. S. Government Printing Office, A study of hazardous air pollutant from electric utility steam generating units: Final report to congress, Washington, DC (1998).
5. U. S. Environmental Protection Agency, U. S. EPA clean air mercury rule, Washington, DC (2005).