1. Die Haufigkeit der Edelgase auf der Erde und im Kosmos;Suess;J. Geol.,1949
2. A table of relative abundances of nuclear species;Brown;Rev. Mod. Php.,1949
3. The origin of the biosphere;Vinogradov,1959
4. Nitrogen, argon, and neon in the Earth's crust. Part II. Nitrogen;Rayleigh;Proc. Roy. Soc. (London),1939
5. Geologic history of sea water: An attempt to state the problem;Rubey;Bull. Geol. Soc. Am.,1951