1. D. I. Trubetskov and A. E. Hramov, Lectures on Microwave Electronics for Physicists (Fizmatlit, Moscow, 2003) [in Russian].
2. A. R. Hutson, J. H. Mc Fee, and D. L. White, Phys. Rev. Lett. 7, 237 (1961).
3. E. D. Gutliansky, Phys. Rev. B 66, 52 511 (2002).
4. L. E. Musienko, I. M. Dmitrienko, and V. G. Volotskaya, Pis’ma Zh. Éksp. Teor. Fiz. 31, 603 (1980) [JETP Lett. 31, 567 (1980)].
5. S. G. Doettinger, R. P. Huebener, R. Gerdemann, et al., Phys. Rev. Lett. 73, 1691 (1994).