1. M. B. Gitis and V. A. Chuprin, Tech. Phys. 57, 671 (2012).
2. P. Hauptmann, N. Hoppe, and A. Püttmer, Measurement Sci. Technol. 13, R73 (2002).
3. I. A. Viktorov, Rayleigh and Lamb Waves: Physical Theory and Applications (Nauka, Moscow, 1966; Plenum, New York, 1967).
4. L. M. Brekhovskikh and O. A. Godin, Acoustics of Layered Media (Nauka, Moscow, 1989; Springer, Berlin, 1990).
5. L. D. Landau and E. M. Lifshits, Course of Theoretical Physics, Vol. 6: Fluid Mechanics (Nauka, Moscow, 1988; Pergamon, New York, 1987).