Krupko, A. E., and K. M. Mikhailov. “Trends, Problems, Prospects of Population Fertility Rate in the Voronezh Region and Sustainable Development”. Proceedings of Voronezh State University. Series: Geography. Geoecology, no. 1, Feb. 2025, pp. 42-48, doi:10.17308/geo/1609-0683/2025/1/42-48.