Kovács, Péter, and Mihály Sárvári. “Correlation Between the Weather in 2017 and the Productivity of Maize”. Acta Agraria Debreceniensis0, no. 74 (June 30, 2018): 89-93. Accessed April 5, 2020. https://ojs.lib.unideb.hu/actaagrar/article/view/1670.