Makeeva, Elena Yu., Irina V. Ivashkovskaya, Liudmila S. Ruzhanskaya, and Konstantin A. Popov. “Relationship Between Regional Socio-Economic Development and Corporate Ratings of Russian Companies”. Economy of Regions 17, no. 1 (March 29, 2021): 86–102. Accessed April 4, 2026. https://economyofregions.org/ojs/index.php/er/article/view/1644.