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2. G. Placzek:Rayleigh and Raman Scattering, UCRL Trans. No. 526 (L) fromHandbuch der Radiologie VI, Vol.2 (Akademische Verlagsgesellschaft, Leipzia, 1934), p. 209.
3. A. C. Albrecht:J. Chem. Phys.,34, 1476 (1961).
4. R. Loudon:Adv. Phys.,13, 423 (1964).
5. J. Tang andA. C. Albrecht: inRaman Spectroscopy, edited byH. A. Szymansky, Vol.2 (Plenum, New York, N.Y., 1970), Chapt. 2.