SanjuánAna I., George Philippidis, and Helena Resano. “Pulling Back the Curtain on ’behind the border’ Trade Costs: The Case of EU-US Agri-Food Trade”. Spanish Journal of Agricultural Research 15, no. 2 (July 31, 2017): e0110. Accessed August 12, 2022. https://revistas.inia.es/index.php/sjar/article/view/10021.