Kijek, Tomasz, Anna Nowak, and Katarzyna Domańska. “The Role of Knowledge Capital in Total Factor Productivity Changes: The Case of Agriculture in EU Countries”. German Journal of Agricultural Economics 65, no. 3 (September 1, 2016). Accessed January 5, 2025. https://www.tib-op.org/ojs/index.php/gjae/article/view/2032.