1. S. A. Nepiiko, Physical Properties of Small-Sized Metallic Particles (Naukova Dumka, Kiev, 1985) [in Russian].
2. É. L. Nagaev, Usp. Fiz. Nauk 162(9), 49 (1992) [Sov. Phys. Usp. 35, 747 (1992)].
3. V. D. Borman, S. Ch. Lai, M. A. Pushkin, V. N. Tronin, and V. I. Troyan, Pis’ma Zh. Éksp. Teor. Fiz. 76(7), 520 (2002) [JETP Lett. 76, 444 (2002)].
4. V. L. Bonch-Bruevich and S. G. Kalashnikov, Physics of Semiconductors, 2nd ed. (Nauka, Moscow, 1990) [in Russian].
5. É. L. Nagaev, Fiz. Tverd. Tela (Leningrad) 25(5), 1439 (1983) [Sov. Phys. Solid State 25, 827 (1983)].