N.G. Bibikov − Dr.Sc. (Biol.), Chief Research Scientist, JSC N.N. Andreev Acoustic Institute (Moscow)

E-mail: nbibikov1@yandex.ru

I.V. Makushevich − Research Scientist, JSC N.N. Andreev Acoustic Institute (Moscow) 

E-mail: iliamail@rambler.ru

S.V. Nizamov − Research Scientist, JSC N.N. Andreev Acoustic Institute (Moscow) 

E-mail: seni13@mail.ru