1. Braun, W. G., Spooner, D. F. and Fenske, M. R.Anal. Chem., 1950,22, 1074.
2. Hibben, J. H. ..The Raman Effect and Its Chemical Applications. Reinhold Publishing Corporation, 1939.
3. Huggins, C. M. and Pimentel, G. C.J. Phys. Chem., 1956,60, 1615.
4. Jones, R. N. and Sandorfy, C.Chemical Applications of Spectroscopy. W. West, Interscience Publishers, Inc., 1956.
5. Karpovich, J...J. Chem. Phys., 1954,22, 1767.