1. J. M. Ziman, Principles of the Theory of Solids (Cambridge University Press, Cambridge, 1964; Mir, Moscow, 1974).
2. L. F. Vereshchagin and S. S. Kabalkina, X-Ray Diffraction Investigations under High Pressure (Nauka, Moscow, 1979) [in Russian].
3. V. W. Paul and D. M. Warschauer, Solids under Pressure, (McGraw-Hill, New York, 1963; Mir, Moscow, 1966).
4. M. Cardona, H. Paul, and H. S. Brooks, Phys. Chem. Solids 8, 204 (1959).
5. M. Cardona, H. Paul, and H. Brooks, Helv. Phys. Acta 33, 329 (1960).