Beltrán-Esteve, M., J. A. Gómez-Limón, and A. J. Picazo-Tadeo. “Assessing the Impact of Agri-Environmental Schemes on the Eco-Efficiency of Rain-Fed Agriculture”. Spanish Journal of Agricultural Research 10, no. 4 (October 23, 2012): 911-925. Accessed August 1, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/3088.