1. V. P. Gubanov, A. M. Efremov, V. I. Koshelev, et al., in Proc. 3rd All-Russia Microwawe Conf., Moscow, 2015 (IRE im. V.A. Kotel’nikova RAN, Moscow, 2015), p.3.
2. Yu. A. Andreev, A. M. Efremov, M. Yu. Zorkal’tseva, et al., in Proc. 3rd All-Russia Microwawe Conf., Moscow, 2015 (IRE im. V.A. Kotel’nikova RAN, Moscow, 2015), p.8.
3. A. V. Arzhannikov, A. V. Burdakov, V. S. Burmasov, et al., in Proc. 3rd All-Russia Microwawe Conf., Moscow, 2015 (IRE im. V.A. Kotel’nikova RAN, Moscow, 2015), p.13.
4. Y. Yang, M. Mandehgar, and D. R. Grischkowsky, IEEE Trans. Terahertz Sci. Technol. 1, 264 (2011).
5. J. W. Waters, Proc. IEEE. 80, 1679 (1992).