FYI https://www.elte.hu/en/dstore/document/41/ELTE-JOKT-2020-03-05-EN.pdf Prof. László Zentai, head of department Eotvos University, Department of Cartography and Geoinformatics H-1117 Budapest, Pazmany Peter setany 1/A, Hungary Tel: (36)-1-3722975, fax: 3722951 - http://lazarus.elte.hu/