1. Neutron Moisture Gauges, IAEA Technical Report Series No 112, Chapter 3.
2. Reactor Handbook Physics, USAEC, 75 (1955).
3. Nucleonics Data Sheet No 23.
4. Glasstone, S. and Edlund, C. M., (1955) Nuclear Reactor Theory. MacMillan, London.
5. Price, B. T., Horton, C. C. and Spinney, K. T., (1957) Radiation Shielding. International Series of Monographs on Nuclear Energy, Pergamon, Oxford.