Pozdnyakova, Tatyana M. “Exploring Cities With a Population of Millions in Russia’s Geography Course Through Their Symbols”. Proceedings of Voronezh State University. Series: Geography. Geoecology0, no. 3 (October 20, 2022): 122-130. Accessed December 5, 2025. https://journals.vsu.ru/geo/article/view/10503.