Lambarraa, F., T. Serra, and J.M. Gil. “Technical Efficiency Analysis and Decomposition of Productivity Growth of Spanish Olive Farms”. Spanish Journal of Agricultural Research 5, no. 3 (September 1, 2007): 259-270. Accessed July 31, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/247.