[1] Peter Great St Petersburg Polytech Univ, Inst Ind Management Econ & Trade, St Petersburg 195251, Russia
[2] Univ Tyumen, Res Ctr, Inst Finance & Econ, Tyumen 625003, Russia
[3] Univ Tyumen, Inst Finance & Econ, Dept Econ Secur Syst Anal & Control, Tyumen 625003, Russia
[4] Univ Tyumen, Inst Finance & Econ, Dept Gen & Econ Sociol, Tyumen 625003, Russia