KOWERSKI, Mieczysław. Lublin Region Economic Barometer. Regional Barometer. Analyses & Prognoses, [S. l.], n. 2 (16), p. 7–16, 2009. DOI: 10.56583/br.1411. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/1411. Acesso em: 14 may. 2025.