SZLACHTA, Jacek. [Szanowni Czytelnicy]. Regional Barometer. Analyses & Prognoses, [S. l.], n. 3, p. 1, 2003. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/1748. Acesso em: 28 apr. 2025.