GRACZYK, A. Development of Renewable Energy Sources in Polish Regional Policy. Regional Barometer. Analyses & Prognoses, [S. l.], v. 15, n. 4, p. 55–59, 2018. DOI: 10.56583/br.403. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/403. Acesso em: 3 jul. 2024.