1. Greytak, T.J., Benedek, G.B.: Phys. Rev. Lett. 17, 179 (1966) Mountain, R.M.: Rev. Mod. Phys. 38, 205 (1966) Berne, B.J., Pecora, R.: Dynamic Light Scattering (Wiley, N.Y. 1976) Boon, J.P., Yip, S., Molecular Hydrodynamics Dover, N.Y., 1991
2. Brillouin, L.: Ann. Phys. 17, 88 (1922)
3. Gross, E.: Nature 125, 201 (1930) ibid., 129, 722 (1932)
4. Landau, L., Placzek, G.: Phys. Zeit. Sow. 5, 172 (1934). Also included in, The Collected Papers of L.D. Landau, ed. by D. ter Haar Pergamon Press, London (1962)
5. Kattawar, G.W., Young, A.T., Humphreys, T.J.: Astrophys. J. 243, 1049 (1981)