1. N. A. Fuks and A. G. Sutugin, Usp. Khim.,34, No. 2 (1965).
2. All-Union State Standard 15485-70: Radioactive Aerosols: Terms and Definitions [in Russian].
3. K. Spurnyi et al., Aerosols [in Russian], Atomizdat, Moscow (1964).
4. MI 96-76: Methods of Checking Photoelectric Aerosol Counters [in Russian].