“Between East and West. State Borders, Travel Documents, Border Crossing in Hungary and in Czechoslovakia (1946-1989)”. Academic Journal of Internal Affairs 68, no. 7 (July 15, 2020): 145–148. Accessed March 3, 2026. http://belugyiszemlejournal.pitservice.hu/index.php/belugyiszemle/article/view/688.