1. Physics Through the 1990s — Condensed Matter Physics (Scientific Interfaces and Technological Applications). NRC, Washington, 1986.
2. Schlechter B.: Physics Today39 (1986), No. 4, 32; 46.
3. Goodwin I.: Physics Today39 (1986), No. 6, 66.
4. Chynoweth A.G.: Ann. Rev. Mater. Sci.5 (1975) 27 (tab. 4).
5. Balarin M.: Festkörperphysik. Akademie-Verlag, Berlin, 1976, p. 9. Repr. in Busch G.: Phys. Bl1.37 (1981) 333.