1. J. Edgecumbe and E. L. Garvin, J. Appl. Phys. 37, 3321 (1966).
2. C. Chianelli, P. Ageron, J. P. Bouvet et al., Nucl. Instrum. Methods Phys. Res. A 273, 245 (1988).
3. M. P. Lorikyan, Usp. Fiz. Nauk 165, 1323 (1995).
4. N. L. Yasnopol’skii and A. É. Shabel’nikova, Fiz. Tverd. Tela. (Leningrad) 10, 103 (1968). [Sov. Phys. Solid State 10, 75 (1968)].
5. N. L. Yasnopol’skii, A. É. Shabel’nikova, A. P. Balashov, and N. S. Lozhkina, in Research in Radio Engineering and Electronics, Part 2 [in Russian], Moscow (1975), p. 67.