JACUCH, Andrzej. European Union response to hybrid threats .......... 11. In: BAJOR, Piotr (ed.). Bezpieczeństwo regionalne: Węzłowe problemy i procesy. SocietasPoland: Księgarnia Akademicka Publishing,2020. v. Societas, Vol. 132. DOI: 10.12797/9788381383899.01. Disponível em: https://books.akademicka.pl/publishing/catalog/book/215/chapter/3736. Acesso em: 18 may. 2025.