I. E. Kalabikhina
Lomonosov Moscow State University
Russian Federation

Irina E. Kalabikhina – Dr. Sci. (Econ.), Professor, Head, Department of Population, Faculty of Economics,

1, Leninskie Gory, Moscow, 119991.

O. V. Kuchmaeva
Lomonosov Moscow State University
Russian Federation

Oksana V. Kuchmaeva – Dr. Sci. (Econ.), Professor, Deputy Head, Department of Population, Faculty of Economics,

1, Leninskie Gory, Moscow, 119991.

Z. G. Kazbekova
Lomonosov Moscow State University
Russian Federation

Zarina G. Kazbekova – Researcher, Department of Population, Faculty of Economics,

1, Leninskie Gory, Moscow, 119991.

E. A. Seredkina
Lomonosov Moscow State University; Russian Presidential Academy of National Economy and Public Administration (RANEPA)
Russian Federation

Ekaterina A. Seredkina – Postgraduate Student, Department of Population, Faculty of Economics;Researcher, Institute of Social Analysis and Forecasting,

1, Leninskie Gory, Moscow, 119991;

11, Prechistenskaya nab., Moscow, 119034.