1. A. D. Lapin and M. A. Mironov, in Proceedings of the XI Session of the Russian Acoustical Society (GEOS, Moscow, 2001), Vol. 1, pp. 192–194.
2. A. D. Lapin, Akust. Zh. 51, 428 (2005) [Acoust. Phys. 51, 362 (2005)].
3. S. N. Rzhevkin, Course of Lectures on the Theory of Sound (Mosk. Gos. Univ., Moscow, 1960) [in Russian].
4. M. A. Isakovich, General Acoustics (Nauka, Moscow, 1973) [in Russian].
5. N. G. Kanev and M. A. Mironov, Akust. Zh. 51, 111 (2005) [Acoust. Phys. 51, 89 (2005)].