Nagy, János, Botond Sinóros-Szabó, Endre Harsányi, Orsolya Nagy, and Endre Harsányi. 2014. “Regional Economic Achievements and Reindustrialisation in Hajdú-Bihar County”. Acta Agraria Debreceniensis, no. 60 (July): 65-74. https://doi.org/10.34101/actaagrar/60/2026.