Pulics, János Gyula. “The Impact of the Schengen Agreement on the Border Region Between the Republic of Serbia and Hungary”. European Values e-Journal 1, no. 1 (December 19, 2025): 52–67. Accessed April 18, 2026. https://www.americanaejournal.hu/index.php/european-values-ejournal/article/view/47420.