1. Recommendations of the ICRP, Publication 9, paras 28, 29 (Pergamon, Oxford, 1966).
2. Tamplin, A. R., Cochran, T. B., Radiation Standards for Hot Particles (Natural Resources Defence Council, Washington, DC, 1974).
3. Lovins, A. B., and Patterson, W. C., Nature, 254, 278 (1975).
4. The Toxicity of Plutonium, (MRC, HMSO, 1975).
5. Bair, W. J., Richmond, C. R., and Wachholz, B. W., A Radiological Assessment of the Spatial Distribution of Radiation Dose from Inhaled Plutonium (WASH 1320 1974).