Horváth, Tibor, Anikó Nyéki, and Miklós Neményi. “The Energy Balance of Maize Production – Alternative Approaches”. Acta Agraria Debreceniensis, no. 74 (June 30, 2018): 59–63. Accessed March 6, 2021. https://ojs.lib.unideb.hu/actaagrar/article/view/1665.