1. See for example, Low Temperature Detectors for Neutrinos and Dark Matter IV, ed. N.E. Booth and G. L. Salmon (Editions Frontieres, 1992).
2. T. Ebisu, N. Nakagawa and T. Watanabe, J. Phys. Soc., Japan, 60 (1991) 1413.
3. P. Freund, J. Gebauer and L. Stodolsky, p. 11 in Ref.1.
4. G.Czapek et al., p.31 in Ref.1.
5. A.K.Drukier et al., p.67 in Ref.1.