A. A. Spiridonov
Peter the Great St. Petersburg Polytechnic University
Russian Federation

Andrei A. Spiridonov – Postgraduate Student, Peter the Great St. Petersburg Polytechnic University.

29 Polytechnicheskaya Str., St. Petersburg 195251

M. L. Fadeeva
National University of Science and Technology “MISIS”
Russian Federation

Marina L. Fadeeva – Postgraduate Student, National University of Science and Technology “MISIS”.

4-1 Leninskiy Ave., Moscow 119049

T. О. Tolstykh
National University of Science and Technology “MISIS”
Russian Federation

Tatyana О. Tolstykh – Dr.Sci. (Econ.), Professor, National University of Science and Technology “MISIS”.

4-1 Leninskiy Ave., Moscow 119049