Kulkova , Inna A., and Dehua Zhang. “Impact of Digital Transformation and Green Innovation Investments on Corporate Labour Productivity in China: A Regional Heterogeneity Analysis”. Economy of Regions 22, no. 3 (September 29, 2026): 639–647. Accessed October 9, 2026. https://economyofregions.org/ojs/index.php/er/article/view/1485.