1. A. P. Kapustin and O. A. Kapustina, Acoustics of Liquid Crystals (Nauka, Moscow, 1986).
2. V. N. Reshetov, I. V. Sytin, and G. N. Yakovenko, in Problems of Shipbuilding (Sudostroenie, Moscow, 1985), Vol. 20, p. 59.
3. E. I. Remizova and V. N. Reshetov, in Proceedings of the VI All-Union Conference “Liquid Crystals and Their Practical Use” (Chernigov, 1988), Vol. 4, p. 529.
4. G. N. Yakovenko, Akust. Zh. 40, 851 (1994) [Acoust. Phys. 40, 754 (1994)].
5. E. Dubois-Violette and F. Rothen, J. Phys. (Paris) 39(10), 1039 (1978).