1.
Jacuch A. European Union response to hybrid threats . 11. In: Bajor P , editor. Bezpieczeństwo regionalne: Węzłowe problemy i procesy [Internet]. Poland: Księgarnia Akademicka Publishing; 2020 [cited 2025 Sep. 18]. pp. 11-25. ( , editor. Societas; vol. Societas, Vol. 132). Available from: https://books.akademicka.pl/publishing/catalog/book/215/chapter/3736