CIUPKA, Stanisław; SANETRA-PÓŁGRABI, Sabina. Contemporary threats to state security - an overview of the issues. Scientific Journal of Bielsko-Biala School of Finance and Law, Bielsko-Biała, PL, v. 24, n. 4, p. 9–13, 2020. DOI: 10.19192/wsfip.sj4.2020.2. Disponível em: https://asej.eu/index.php/asej/article/view/555. Acesso em: 26 apr. 2024.