1. The use of ionization potentials I;Ahrens;Geochim. et Cosmochim. Acta,1952
2. Astrophysical Quantities;Allen,1963
3. The Abundance of the Elements;Aller,1961
4. Origin, age and composition of meteorites;Anders;Space Sci. Rev.,1964
5. The origin of meteorites as small bodies;Arnold,1964