1. P. B. Repin and A. G. Rep’ev, Zh. Tekh. Fiz. 74(7), 33 (2004) [Tech. Phys. 49, 839 (2004)].
2. V. F. Tarasenko, S. K. Lyubutin, B. G. Slovikovskiĭ, and I. D. Kostyrya, Pis’ma Zh. Tekh. Fiz. 31(14), 88 (2005) [Tech. Phys. Lett. 31, 624 (2005)].
3. L. P. Babich, et al., Pis’ma Zh. Tekh. Fiz. 1(4), 166 (1975) [Sov. Tech. Phys. Lett. 1, 79 (1975)].
4. L. P. Babich, Zh. Tekh. Fiz. 44, 1846 (1974) [Sov. Phys. Tech. Phys. 19, 1154 (1974)].
5. V. F. Tarasenko and S. I. Yakovlenko, Usp. Fiz. Nauk 174, 953 (2004) [Phys. Usp. 48, 887 (2004)].