1. For a historical review see Many, A., Goldstein, Y. and Grover, N.B., Semiconductor Surfaces, North-Holland, Amsterdam, 1965, Chap. I.
2. See for example, Potter, E.G., Electrochemistry, Cleaver-Hume, London, 1956, Chap. VII.
3. Brattain, W.G., and Garrett, G.G.B. N.Y. Acad. of Sciences, 58, 951 (1953).
4. Many, A., Goldstein, Y., and Grover, N.B., Semiconductor Surfaces, North-Holland, Amsterdam, 1965;
5. Frankl, D.R., Electrical Properties of Semiconductor Surfaces, Pergamon, N.Y., 1967.