1. “Molecular Spectra and Molecular Structure.” III. “Electronic Spectra and Electronic Structure of Polyatomic Molecules.”;Herzberg,1966
2. “Molecular Spectroscopy of the Triplet State.”;McGlynn,1969
3. “Techniques of Vacuum Ultraviolet Spectroscopy.”;Samson,1967
4. “Spectra and Energy Levels of Rare Earth Ions in Crystals.”;Dieke,1968