1. Picosecond Phenomena III, K.B. Eisenthal, R.M. Hochstrasser, W. Kaiser, and A. Laubereau, Eds., (Springer-Verlag, 1982). b. R.L. Fork, C.V. Shank, R. Yen and C. Hirlimann, IEEE J. QE-19, 500 (1983).
2. G.A. Kenney-Wallace, Phil. Trans. R. Soc. Lond. A. 299, 309–319 (1980).
3. Newer Aspects of Molecular Relaxation Processes, Faraday Symposium No. 11, Chem. Soc., London (1977). b. Structure and Motion in Molecular Liquids, Faraday Disc. No. 66, Chem. Soc., London (1978).
4. 3. B. Berne in Advanced Treatise on Physical Chemistry, vol. VIIIB, ed. D. Henderson (Academic Press 1971)
5. 4. b. R.G. Gordon Adv. Mag. Res. 3, 1 (1968).