Gagarina, Galina Yuryevna, Evgeny Ivanovich Dzyuba, Roman Vladimirovich Gubarev, and Fanil Saitovich Fayzullin. “Forecasting of Socio-Economic Development of the Russian Regions”. Economy of Regions 13, no. 4 (November 27, 2017): 1080–1094. Accessed June 4, 2026. https://economyofregions.org/ojs/index.php/er/article/view/2048.