1. O. V. Rudenko, Akust. Zh. 44, 786 (1998) [Acoust. Phys.44, 717 (1998)].
2. O. V. Rudenko, Akust. Zh. 45, 397 (1999) [Acoust. Phys. 45, 351 (1999)].
3. A. I. Vesnitskii and A. I. Potapov, Prikl. Mekh. 11(4), 98 (1975).
4. A. I. Vesnitskii, S. V. Krysov, and A. I. Potapov, Mekh. Tverd. Tela, No. 6, 128 (1978).
5. V. A. Pozdeev, Nonstationary Wave Fields in Regions with Moving Boundaries (Naukova Dumka, Kiev, 1985).