1. Anuradha R., et al., 2010. A new technique for making large area beta reference sources required for calibration of surface contamination monitors. National Symposium on Nuclear Instrumentation, NSNI-2010, February 24–26, 2010, Mumbai, India.
2. Effect of air on gas amplification characteristics in argone–propane (1%)-based proportional counters for airbone radon monitoring;Curzio;Nucl. Instrum. Methods Phys. Res. A,2005
3. GUM, 1993. Guide to the Expression of Ucertainty in Measurement.
4. Reference Sources for the Calibration of Surface Contamination Monitors-Beta–Emitters (Maximum Beta Energy Greater than 0.15MeV) and Alpha–Emitters;ISO 8769,1988
5. ISO 13528, 2005(E). Statistical Methods for use in Proficiency Testing by Interlaboratory Comparisons.