Tamás, András. “Opportunities of Renewable Energy Use in Hajdú-Bihar and Szabolcs-Szatmár-Bereg Counties”. Acta Agraria Debreceniensis, no. 63 (February 17, 2015): 143–146. Accessed November 22, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/1851.