KUREK, S. Spatial differences in the level of regional development in the European Union, on the basis of selected measures. Studies of the Industrial Geography Commission of the Polish Geographical Society, [S. l.], v. 16, p. 87–104, 2010. DOI: 10.24917/20801653.16.9. Disponível em: https://prace-kgp.uken.krakow.pl/article/view/361. Acesso em: 27 apr. 2024.