1. O. P. Pchelyakov, Yu. B. Bolkhovityanov, A. V. Dvurechenskii, et al., Fiz. Tekh. Poluprovodn. 34, 1281 (2000) [Semiconductors 34, 1229 (2000)].
2. D. J. Paul, Semicond. Sci. Technol. 19(4), R75 (2004).
3. A. I. Yakimov, A. V. Dvurechenskii, A. I. Nikiforov, et al., Fiz. Tekh. Poluprovodn. 37, 1383 (2003) [Semiconductors 37, 1345 (2003)].
4. A. I. Yakimov, A. V. Dvurechenskii, V. V. Kirienko, et al., Fiz. Tekh. Poluprovodn. 38, 1265 (2004) [Semiconductors 38, 1225 (2004)].
5. A. V. Dvurechenskii and A. I. Yakimov, Fiz. Tekh. Poluprovodn. 35, 1143 (2001) [Semiconductors 35, 1095 (2001)].