1. V. V. Goncharov et al., Acoustic Tomography of Ocean (IPF RAN, Novgorod, 1997) [in Russian].
2. I. P. Smirnov, J. W. Caruthers, and A. I. Khil’ko, J. Comput. Acoust. 9, 395 (2001).
3. I. P. Smirnov, Dzh. V. Karuzers, and A. I. Khil’ko, Preprint No. 505, IPF RAN (Nizhni Novgorod, 1999).
4. A. G. Luchinin and A. I. Khil’ko, Akust. Zh. 51, 124 (2005) [Acoust. Phys. 51, 182 (2005)].
5. I. P. Smirnov, A. I. Khil’ko, and A. A. Khil’ko, Izv. Vyssh. Uchebn. Zaved., Radiofiz. 52, 134 (2009).