1. O. P. Galkin, in Acoustics of the Ocean: State of the Art, Ed. by L. M. Brekhovskikh and I. B. Andreeva (Nauka, Moscow, 1982), pp. 92–106.
2. O. P. Galkin, L. V. Shvachko, and E. A. Kharchenko, in Acoustics in the Ocean (Nauka, Moscow, 1992), pp. 114–127.
3. O. P. Galkin, E. A. Kharchenko, and L. V. Shvachko, Akust. Zh. 46, 325 (2000) [Acoust. Phys. 46, 274 (2000)].
4. A. E. Vedeneev, O. P. Galkin, I. S. Rogozhkin, and L. M. Filippov, Vopr. Sudostr., Ser. Akust., No. 15, 122 (1982).
5. K. P. Bongiovanni and W. L. Siegmann, J. Acoust. Soc. Am. 100, 3033 (1996).