1. National approaches to controlling exposure to radon;Colgan,1995
2. Solid State Nuclear Track Detection: Principles, Methods and Applications;Durrani,1987
3. Radon Measurements by Etched Track Detectors: Applications in Radiation Protection, Earth Sciences and the Environment;Durrani,1997
4. Nuclear Tracks in Solids: Principles and Applications;Fleischer,1975
5. ICRP, 1993. Protection against 222Rn at home and at work. International Commission on Radiological Protection Publication 65. Ann. ICRP 23 (2). Pergamon Press, Oxford.