1. Institute of Economics and Management, Department for Finance and Credit, North Caucasus Federal University, Russia. Faculty for Regional Development, Department for Regional Economics, Russian Technological University, Russia.
2. Institute of Economics and Management, Department for Finance and Credit, North Caucasus Federal University, Russia.
3. Faculty for Finance, Financial Management Department, Plekhanov Russian University of Economics, Moscow, Russia.
4. Faculty for Regional Development, Department for Regional Economics, Russian Technological University, Russia.