1. D.E. Lea, Actions of Radiations on Living Cells., London: Cambridge University Press, 1962.
2. P. Alexander, Atomic Radiation and Life., London: Penguin Books, Inc., 1965.
3. Report of the United Nations Scientific Committee on the Effects of Atomic Radiation. United Nations, New York, 1962.
4. ICRP Report of Committee II on Permissible Dose for Internal Radiation. London: Pergamon Press, 1959.
5. A. Brodsky, “Determining Industrial Hygiene Requirements for Installations Using Radioactive Materials.” Am. Ind. Hygiene Assoc., J,., 26,: 294, 1965.