Balawajder, Grzegorz. “The Institutional Dimension of the Protection of the External Borders of the European Union in the Context of the Security of the Member States”. Border and Regional Studies 6, no. 1 (June 4, 2018): 77–101. Accessed November 2, 2024. https://czasopisma.uni.opole.pl/index.php/p/article/view/380.