1. A review on the use of Mössbauer spectroscopy to study defects in semiconductors is given in: G. Langouche,Mössbauer Spectroscopy Applied to Inorganic Chemistry, ed. G. Long and F. Grandjean, Vol. 3 (Plenum Press, New York, 1989) Ch. 10, to be published.
2. D.V. Lang, in:Deep Centers in Semiconductors, ed. S. Pantelides (Gordon and Breach, New York, 1986) Ch. 7.
3. D.V. Lang and R.A. Logan, Phys. Rev. Lett. 39(1977)635.
4. D.V. Lang, R.A. Logan and M. Jaros, Phys. Rev. B19(1979)1015.
5. P.M. Mooney, in:Defects in Electronic Materials, ed. M. Stavola, S.J. Pearton and G. Davies (Materials Research Society Symposia Proceedings 104, 1988) p. 561.