1. V. F. Masterov, Pis’ma Zh. Tekh. Fiz. 19, 13 (1993) [Tech. Phys. Lett. 19(8), 231 (1993)].
2. V. F. Masterov, I. L. Likholit, and N. M. Shibanova, Semicond. Sci. Technol. 6, 593 (1993).
3. M. Onoda, A. Yamamoto, E. Takayama-Muromachi, and S. Takekawa, Jap. J. Appl. Phys. 27, L833 (1988).
4. Y. Hayashi, S. Sako, and M. Fukui, Jap. J. Appl. Phys. 28, L1531 (1989).
5. A. A. Levin, Yu. I. Smolin, Yu. F. Shepelev et al., Fiz. Tverd. Tela (St. Petersburg) 35, 2170 (1993) [Phys. Solid State 35, 1079 (1993)].