Sutygina , Alevtina I., and Tatiana N. Topoleva. “Dairy Farming Development in Udmurtia, Russia: Digital and Biological Transformation”. Economy of Regions 21, no. 4 (December 12, 2025): 1016–1030. Accessed April 6, 2026. https://economyofregions.org/ojs/index.php/er/article/view/1181.