V. B. Arkadyev, A. N. Vlasenko, O. A. Golubeva

D.S. Kurushin - Ph.D. (Eng.), Associate Professor, Perm National Research Polytechnic University. E-mail: daniel.kurushin@gmail.com D.V. Kondakov - The Master Student, Perm National Research Polytechnic University. E-mail: x8973@ya.ru E.V. Dolgova - Dr.Sc. (Econ.), Professor, Perm National Research Polytechnic University. E-mail: elena@dolgova.info