Kalnaya , Anastasia Y., Evgeniya I. Krivokora, and Svetlana N. Kalyugina. “Assessing Labour Resource Efficiency: A Territorial Perspective ”. Economy of Regions 21, no. 2 (June 30, 2025): 452–470. Accessed April 2, 2026. https://economyofregions.org/ojs/index.php/er/article/view/1008.