References
- De Felice, P., & Myteberi, X. (1996). The 222Rn reference measurement system developed at ENEA. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 369(2/3), 445–451.
- Picolo, J. L. (1996). Absolute measurement of radon 222 activity. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 369(2/3), 452–457.