1. A. N. Georgobiani and P. A. Pipinis, Tunneling Phenomena in Luminescence of Semiconductors (Mir, Moscow, 1994) [in Russian].
2. M. K. Samokhvalov, Thin Film Electroluminescent Radiation Sources (Ul’yan. Gos. Tekh. Univ., Ul’yanovsk, 1999) [in Russian].
3. I. Yu. Brigadnov and M. K. Samokhvalov, Izv. Vyssh. Uchebn. Zaved., Mater. ’Elektron. Tekh., No. 3, 64 (1998).
4. N. K. Morozova and V. A. Kuznetsov, Zinc Sulfide: Preparation and Optical Properties (Nauka, Moscow, 1987) [in Russian].
5. N. T. Gurin, A. V. Shlyapin, O. Yu. Sabitov, and D. V. Ryabov, Zh. Tekh. Fiz. 73(4), 90 (2003) [Tech. Phys. 48, 469 (2003)].