1. Emanation characteristics of terrestrial and lunar materials and the 222Rn loss effect on the U-Pb system discordance;Barretto,1972
2. Detection of radon emanation from the lunar regolith during Apollo 15 and 16;Bjorkholm,1973
3. Detection of a nonuniform distribution of polonium-210 on the Moon with the Apollo 16 alpha particle spectrometer;Bjorkholm;Science,1973
4. Variation of 222Rn to 210Po activity ratio on the lunar surface as observed by the alpha particle spectrometer;Bjorkholm,1974
5. The Dynamical Character of Adsorption;de Boer,1953