1. IAEA, TRS. 398. Absorbed Dose Determination in External Beam Radiotherapy: An International Code of Practice for Dosimetry Based on Standards of Absorbed Dose to Water, (Vienna International Atomic Energy Agency, 2009).
2. W.W. Nazaroff and A.V. Nero, Radon and It’s Decay Products Indoor Air, (Johon Wiley and Sons Inc. New York, 1998), p. 518.