WĘCKI, Mirosław. “Unheard-of Achievements”. A Source Contribution to the Relationship between the Upper Silesian Gauleiter Fritz Bracht and the Commandant of Auschwitz-Birkenau Rudolf Höss. Dzieje Najnowsze. Online. 28 April 2024. Vol. 55, no. 4, pp. 183-200. [Accessed 5 July 2025]. DOI 10.12775/DN.2023.4.09.