1. International Commission on Radiation Units and Measurements. Radiation Quantities and Units. ICRU Report no. 11, Sept. 1, 1968. ICRU Publications, P.O. Box 30165, Washington, D.C. 20014.
2. P. N. Stevens and H. C. Claiborne. Weapons Radiation Shielding Handbook. DASA Report No. 1892-5, Washington, D.C, June 1970.
3. F. H. Attix and W. C. Roesch. Radiation Dosimetry, vol. 1, 2nd ed. Academic Press, New York, 1968.
4. J. A. Auxier. “Kerma Versus First Collision Dose: The Other Side of the Controversy.” Health Phys. 17: 342,1969.
5. A. E. Profio. Radiation Shielding and Dosimetry. Wiley-Interscience, New York, p. 302, 1979.