1. National Council on Radiation Protection and Measurements (NCRP), Ionizing Radiation Exposure of the Population of the United States, Report 93, Bethesda, MD, 1987.

2. U.S. Department of Energy "Occupational Radiation Protection, Final Rule," Code of Federal Regulations, Title 10, Part 835, December 14, 1993.

3. The National Research Council Committee on the Biological Effects of Ionizing Radiation, Health Effects of Exposure to Low Levels of Ionizing Radiation, BEIR V, Washington, D.C., 1990.

4. Health Physics Society, Radiation Risk in Perspective, Position Statement, 1996.

5. U.S. Nuclear Regulatory Commission, Instruction Concerning Risks from Occupational Radiation Exposure, Regulatory Guide 8.29, Rev. 1, NRC, Washington, D.C., February 1996.

6. American Cancer Society, Cancer Facts and Figures—1995, Atlanta, GA, 1995.

7. International Council on Radiation Protection (ICRP), Recommendations of the International Commission on Radiological Protection, Publication 60, Oxford, England, 1990.