BAGIEŃSKI, W. The Office for State Protection 1992 Investigation into the Destruction of MSW Department I Operational Records Between 1989 and 1990. Przegląd Archiwalny Instytutu Pamięci Narodowej, [S. l.], v. 18, p. 131–172, 2025. DOI: 10.48261/PAIPN251805. Disponível em: https://czasopisma.ipn.gov.pl/index.php/pa/article/view/2817. Acesso em: 11 nov. 2026.