Arkhangel’skii V.N., Kalachikova O.N. Maternal age at first birth: dynamics, regional differences, determination. Economic and Social Changes: Facts, Trends, Forecast, 2020, vol. 13, no. 5, pp. 200–217. DOI: 10.15838/esc.2020.5.71.12
Lomonosov Moscow State University; Institute for Demographic Research – Branch of the Federal Center of Theoretical and Applied Sociology, Russian Academy of Sciences; Institute for Healthcare Organization and Medical Management of Moscow Healthcare Department
Federal Center of Theoretical and Applied Sociology of the Russian Academy of Sciences, Institute for Demographic Research; Federal State Budgetary Institution of Science Vologda Research Center of the Russian Academy of Sciences (VolRC RAS)