A.A. Teplykh – Ph. D. (Phys.-Math.), Senior Research Scientist, Laboratory of Physical Acoustics,  Saratov branch of Kotel'nikov IRE of RAS

E-mail: teplykhaa@mail.ru

B.D. Zaitsev – Dr. Sc. (Phys.-Math.), Professor, Head of Laboratory of Physical Acoustics, 

Saratov branch of Kotel'nikov IRE of RAS

E-mail: zai-boris@yandex.ru

A.M. Shikhabudinov – Ph. D. (Phys.-Math.), Senior Research Scientist, Laboratory of Physical Acoustics,  Saratov branch of Kotel'nikov IRE of RAS

E-mail: alex-sheih@yandex.ru

I.A. Borodina – Ph. D. (Phys.-Math.), Senior Research Scientist, Laboratory of Physical Acoustics,  Saratov branch of Kotel'nikov IRE of RAS

E-mail: borodinaia @yandex.ru