E. S. Inozemtcev
Saratov Social and Economic Institute (branch) of the Plekhanov Russian University of Economics
Russian Federation

Evgeny S. Inozemtcev - PhD, Assistant Professor of the Department for Statistics of the Saratov Social and Economic Institute (branch) of the PRUE.

89 Radishcheva Str., Saratov, 410003

O. V. Kochetygova
Saratov Social and Economic Institute (branch) of the Plekhanov Russian University of Economics
Russian Federation

Olga V. Kochetygova - PhD, Assistant Professor of the Department for Statistics of the Saratov Social and Economic Institute (branch) of the PRUE.

89 Radishcheva Str., Saratov, 410003

M. A. Katkova
Yuri Gagarin State Technical University of Saratov
Russian Federation

Marina A. Katkova - PhD, Vice Rector for educational work, Assistant Professor of the Department for Economics of Labor and Production Complexes of the Yuri Gagarin State Technical University of Saratov.

77 Politekhnicheskaya Str.,Saratov, 410016