Fedyunina, Anna A., Yuri V. Simachev, and Igor M. Drapkin. “Intensive and Extensive Margins of Export: Determinants of Economic Growth in Russian Regions under Sanctions”. Economy of Regions 19, no. 3 (September 27, 2023): 884–897. Accessed November 23, 2024. https://economyofregions.org/ojs/index.php/er/article/view/533.