Fabia, Ireneusz, Urszula Fabia, and Sebastian Piotrowski. 2024. “Cross-Border Cooperation As a Key Element of Internal Security – Selected Aspects ”. Scientific Journal of Bielsko-Biala School of Finance and Law 28 (3). Bielsko-Biała, PL. https://doi.org/10.19192/wsfip.sj3.2024.16.