1. Air Chemistry and Radioactivity;Junge,1963
2. Electric charge and radioactivity of naturally occurring aerosols;Bricard;Aerosol Science,1966
3. Short-lived daughter ions of radon-222 in relation to some atmospheric processes;Roffman;J. Geophys. Res.,1972
4. Radon transport mechanisms below the earth's surface;Wilkening,1978