Pereira Lopez, X., M. Śmiglak-Krajewska, M. Veiga Carballido, and M. Węgrzyńska. “ECONOMIC STATUS OF FARMS IN POLAND AND SPAIN IN THE YEARS 2011–2016 BASED ON FADN STATISTICS”. Proceedings of the International Scientific Conference "Economic Sciences for Agribusiness and Rural Economy", no. 1, Sept. 2018, https://js.wne.sggw.pl/index.php/esare/article/view/1464.