1. Guyer, R. A.: Solid State Physics, Vol. 23, Seitz, Turnbull and Ehrenreich, Academic Press, N.Y., N.Y., 1969, 402. This paper is a reasonably complete survey of the literature up to 1970; it emphasizes the short range correlation problem. N. R. Werthamer, Am. J. Phys. 37, (1969). 763 This paper is a comprehensive survey of the phonon problem (see later).
2. Pollack, G. L.: Rev. Modern Phys. 36, 748 (1964). This paper contains extensive data on the rare gas solids; it is the source of the parameters for these systems listed in Table I. There is no equivalent review for the hydrogen systems-details about these must be found from the literature. One might begin with Raich and Etters, J. Low Temp. Phys. 6, 229 (1972).
3. Leggett, A. J.: Phys. Rev. Letters, 25, 1543 (1970); and T. L.Ginsberg and A. A. Sobyanin, JETP Letters
15, 242 (1972).
4. Hillier, J. H., Serajul Islam, M., and Walkley John: J. Chem. Phys. 43, 3705 (1965).
5. Anderson, P. W. and Palmer, R. G.: Nature (Physical Science)
231, 145 (1971).