Rastvortseva, Svetlana N., and Inna V. Manaeva. “Zipf’s Law for Russian Cities: Analysis of New Indicators”. Economy of Regions 16, no. 3 (September 30, 2020): 935–947. Accessed April 24, 2026. https://economyofregions.org/ojs/index.php/er/article/view/1690.