GROTT, W. Operation “Tempest” and the Activities of the Polish Underground State in German Polish-Language Propaganda in the General Governorate. Remembrance and Justice, [S. l.], v. 47, n. 1, p. 126–145, 2026. DOI: 10.48261/PIS264705. Disponível em: https://czasopisma.ipn.gov.pl/index.php/pis/article/view/2895. Acesso em: 13 nov. 2026.