1. V. V. Ushakov and Yu. V. Klevkov, Fiz. Tekh. Poluprovodn. 37, 1067 (2003) [Semiconductors 37, 1042 (2003)].
2. V. V. Ushakov and Yu. V. Klevkov, Fiz. Tekh. Poluprovodn. 37, 1298 (2003) [Semiconductors 37, 1259 (2003)].
3. V. V. Ushakov and Yu. V. Klevkov, Fiz. Tekh. Poluprovodn. 41, 140 (2007) [Semiconductors 41, 136 (2007)].
4. J. Britt and C. Ferekides, Appl. Phys. Lett. 62, 2851 (1993).
5. I. Visoly-Fisher, S. R. Cohen, A. Ruzin, and D. Cahen, Adv. Mater. 16, 879 (2004).