1. “Metal-Ligand and Related Vibrations”;Adams,1968
2. The attenuated total reflection spectra of polyatomic inorganic anions-II.
3. Manual on Recommended Practices in Spectrophotometry—E-13;A.S.T.M.,1969
4. Molecular Formula List of Compounds, Names, References to Published Infrared Spectra, AMD 31;A.S.T.M.,1969