1. R. Mah, in Polycrystalline Semiconductors: Physical Properties and Applications, Ed. by G. Harbeke (Springer, Berlin, 1985; Mir, Moscow, 1989).
2. Electrolumenescent Light Sources, Ed. by I. K. Vereshchagin (Énergoatomizdat, Moscow, 1990) [in Russian].
3. N. T. Gurin, D. V. Ryabov, O. Yu. Sabitov, and A. M. Afanas’ev, Pis’ma Zh. Tekh. Fiz. 31(3), 79 (2005) [Tech. Phys. Lett. 31, 125 (2005)].
4. N. T. Gurin, A. M. Afanas’ev, O. Yu. Sabitov, and D. V. Ryabov, Fiz. Tekh. Poluprovodn. (St. Petersburg) 40, 949 (2006) [Semiconductors 40, 920 (2006)].
5. A. Zeinert, C. Barthou, P. Benalloul, and J. Benoit, Jpn. J. Appl. Phys., Part 1 35, 3909 (1996).