1. H.E. White, Introduction to Atomic Spectra, (McGraw-Hill, 1934).
2. S.P. Davis, Diffraction Grating Spectrographs,(Holt, Rinehart and Winston, 1970).
3. G.R. Harrison, R.C. Lord and J.R. Loofbourow, Practical Spectroscopy, 2nd ed. (Prentice-Hall, 1965).
4. R. Eisberg and R. Resnick, "Atomic Spectra - Correction for Finite Nuclear Mass," Section 4-4 through 4-7 in Quantum Physics of Atoms, Molecules, Solids, Nuclei, and Particles(Wiley, 1985). (721 kb)
5. A.C. Melissinos, "Isotope Shift," Section 3.3 in Experiments in Modern Physics(Academic Press, 1966). (139 kb)
