1. Physical Acoustics. Principles and Methods, Ed. by W. P. Mason (Academic, New York, 1964; Mir, Moscow, 1966), Vol. 1, Part A.
2. Kumar Ram, Acustica 27(6), 317 (1972).
3. A. A. Kleshchev, Akust. Zh. 50, 86 (2004) [Acoust. Phys. 50, 74 (2004)].
4. L. M. Brekhovskikh, Akust. Zh. 13, 541 (1960) [Sov. Phys. Acoust. 13, 462 (1960)].
5. I. A. Viktorov, Acoustic Surface Waves in Solids (Nauka, Moscow, 1981), p. 215 [in Russian].