1. M. Asplund, N. Grevesse, A.J. Sauval, The Solar Chemical Composition, In: T. G. Barnes, III, F.N. Bash. (eds.), Cosmic Abundances as Records of Stellar Evolution and Nucleosynthesis, Vol. 336 of Astronomical Society of the Pacific Conference Series, 2005, p. 25.
2. The Chemical Composition of the Sun;Asplund;Ann.Rev.Astron.Astrophys.,2009
3. Solar Chemical Abundances Determined with a CO5BOLD 3D Model Atmosphere;Caffau;Solar Physics,2011
4. Standard Solar Composition;Grevesse;Space Sci.Rev.,1998
5. N. Grevesse, A. Noels, Cosmic abundances of the elements., In: N. Prantzos, E. Vangioni-Flam, M. Casse. (Eds.), Origin and Evolution of the Elements, 1993, pp. 15-25.