1. UNSCEAR, United Nations Scientific Committee on the Effects of Atomic Radiation, Report to the General Assembly (New York: United Nations) (2000)
2. F Steinhausler, M Hofman and H Lettner Radiat. Prot. Dosim. 56 127 (1994)
3. J Porstendorfer J. Aerosol Science 25 219 (1994)
4. S D Schery Thoron and its progeny in the atmospheric environment, Gases Pollutants: Characterization and cycling (Inc, New York: John Wiley & Sons) Ch.10 (1992)
5. H Israel, M Horbert and C de La Riva Measurement of the thoron concentration of the lower atmosphere in relation to the exchanges 9thAUSTA JSCH”) IN THIS REGION, Final report, Contract DAJA 37 - 67 - C - 0593 (New York: U S Army, APO) (1968)