Zhou, Kun, JensenAllan L., BochtisDionysis D., and SørensenClaus G. “Performance of Machinery in Potato Production in One Growing Season”. Spanish Journal of Agricultural Research 13, no. 4 (December 2, 2015): e0215. Accessed August 20, 2022. https://revistas.inia.es/index.php/sjar/article/view/7448.