Gábor Demeter (b. 1980) is a senior research fellow at HUN-REN Institute of History (former HAS). Holds a PhD both in History and Earth Sciences. Habilitated in historical geography at the University of Debrecen. His special field of interest includes the diplomatic and socio-economic history of the Balkans and Austria-Hungary, and historical GIS (GISta Hungarorum: http://gistahungarorum.abtk.hu ; www.balkanethnicmaps.hu), historical statistics (balkans-in-numbers.eu ), historical geography, environmental history. Deputy leader of the Hungarian-Bulgarian Joint Academic Committee of Historians (editor of series BHHC and Hungarian Historical Review), member of the editorial board of Istoricheski Pregled, Makedonski Pregled, Hiperboreea, Review of Croatian History. https://vm.mtmt.hu//search/slist.php?lang=0&AuthorID=10015270