V.N. Kotlyarov – Senior Research Scientist, JSC «VNIIRA» (St. Petersburg)
А.V. Lebedev – Engineer 2 cat., JSC «VNIIRA» (St. Petersburg)
E-mail: ilavjob@gmail.com

D.V. Menkov – Technician 1 cat., JSC «VNIIRA» (St. Petersburg)
А.D. Nikolaev – Ph.D. (Eng.), Senior Research Scientist, Head of Research Laboratory, JSC «VNIIRA» (St. Petersburg) E-mail: aln@vniira.ru