1. F. G. Bass, A. A. Bulgakov, and A. P. Tetervov, High-Frequency Properties of Semiconductors with Superlattices (Nauka, Moscow, 1989) [in Russian].
2. M. Herman, Semiconductor Superlattices (Akademie, Berlin, 1986; Mir, Moscow, 1989).
3. A. Ya. Shik, L. G. Bakueva, S. F. Musikhin, and S. A. Rykov, Physics of Low-Dimensional Systems (Nauka, St. Petersburg., 2001) [in Russian].
4. I. P. Suzdalev, Nanotechnology: Physics and Chemistry of Nanoclusters, Nanostructures, and Nanomaterials (KomKniga, Moscow, 2006) [in Russian].
5. M. M. Sobolev, G. E. Tsyrlin, A. A. Tonkikh, and N. D. Zakharov, Semiconductors 42(3), 305 (2008).