1. M.W. Chase Jr. (ed.), NIST-JANAF Thermochemical Tables, Part 2, 4th edn. (NIST, Washington, DC, 1998), p. 1647
2. R.C. Weast (ed.), CRC Handbook of Physics and Chemistry, 51st edn. (The Chemical Rubber Co., Cleveland, 1971), pp. D-412, D-176
3. Y.A. Ralchenko, A.E. Kramida, J. Reader, NIST ASD Team, NIST Atomic Spectra Database, version 3.1.5. (National Institute of Standards and Technology, Gaithersburg, MD, 2008). http://physics.nist.gov/asd3 . Accessed 15 May 2008
4. J.R. Downey Jr., AFOSR-TR-78-1960 (AD-A054854) (Dow Chemical Company, Midland, MI, 1978)
5. B.J. McBride, S. Heimel, J.G. Ehlers, S. Gordon, NASA Rep. No. SP-3001 (Washington, DC, 1963)