POMIERNY, J. System Changes in State Condition of Evolution of Region and Citizens. Regional Barometer. Analyses & Prognoses, [S. l.], n. 4 (26), p. 113–121, 2012. DOI: 10.56583/br.1311. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/1311. Acesso em: 5 jul. 2024.