M. A. Buzova – Chief Research Scientist, JSC «SIP RS» (Samara)

E-mail: bma@siprs.ru

M. A. Minkin – Chief Research Scientist, JSC «SIP RS» (Samara)

E-mail: mma@siprs.ru

A. A. Rubis – Applicant, Povolzhskiy State University of Telecommunications and Informatics