1. O. P. Galkin, E. A. Kharchenko, and L. V. Shvachko, in Proceedings of the 9th All-Union Acoustical Conference (Acoustics Institute, Moscow, 1977), Section D, pp. 1–4.
2. O. P. Galkin, L. V. Shvachko, and E. A Kharchenko, Vopr. Sudostr., Ser. Akust., No. 11, 80 (1978).
3. O. P. Galkin, in Ocean Acoustics. The State of the Art, Ed. by L. M. Brekhovskikh and I. B. Andreeva (Nauka, Moscow, 1982), pp. 92–106.
4. O. P. Galkin and L. V. Shvachko, Akust. Zh. 44, 192 (1998) [Acoust. Phys. 44, 153 (1998)].
5. O. P. Galkin, L. V. Shvachko, E. A. Kharchenko, et al., in Problems of Ocean Acoustics, Ed. by L. M. Brekhovskikh and I. B. Andreeva (Nauka, Moscow, 1984), pp. 118–133.