M. I. Bogachev - Ph.D. (Eng.), Associate Professor, Saint-Petersburg State Electrotechnical University «LETI» n. a. V. I. Ulyanov (Lenin). E-mail: rogex@mail333.com
A.R. Kayumov - Ph.D. (Biol.), Kazan (Volga region) Federal University. E-mail: kairatr@yandex.ru
O.A. Markelov - Saint-Petersburg State Electrotechnical University «LETI» n. a. V. I. Ulyanov (Lenin). E-mail: omarkelov@yandex.ru
V.A. Mironov - Junior Research Scientist, RAS Institute of Physical Chemical and Biological Problems in Soil Science. E-mail: Vasiliy.A.Mironov@gmail.com