References

• Harris, D. (1999), Quantitative Chemical Analysis, W.H. Freeman and Company.
• Http://www.epa.gov (2000)
• Http://newnet.lanl.gov (2000)
• Http://www.uic.com (2000)
• Radiation in the Environment. U.S. Department of Energy, Office of Environmental Restoration and Waste Management. November 1991.
• Shapiro, J. (1990), Radiation Protection: A Guide for Scientists and Physicians, Harvard University Press.