[1]    P.G.Bass, Resurrection of the Bohr/Sommerfeld Theory of Atomic Structure - [1] - Basic Orbits  Including Relativistic Mass Increase Effects, www.relativitydomains.com.

[2]    P.G.Bass, An Investigation into the Nature of de Broglie Matter Waves in the Relativistic Space-  Time Domain D₀, www.relativitydomains.com.

[3]    M.Born, Atomic Physics, Blackie & Sons Ltd, 1959

[4]    P.G.Bass, The Relativistic Characteristics of a Spinning Spherical Mass in the Relativistic Space-Time Domain D₀, www.relativitydomains.com.

[5]    Charlotte E.Moore, (Ed. Jean W.Gallager), Tables of Spectra of Hydrogen, Carbon, Nitrogen and Oxygen Atoms and Ions, CRC Press, 1993.

[6]    T.P.Softley, Atomic Spectra, Oxford University Press, 1994-2003.

[7]    P.G.Bass, The Special Theory of Relativity - A Classical Approach, Apeiron Vol.10, (4), October 2003, (also on www.relativitydomains.com).