DZIAŁO, Joanna. State Aid in The European Union in the Period of the Economic Crisis. Comparative Economic Research. Central and Eastern Europe, [S. l.], v. 17, n. 1, p. 5–19, 2014. DOI: 10.2478/cer-2014-0001. Disponível em: https://czasopisma.uni.lodz.pl/CER/article/view/7004. Acesso em: 7 dec. 2025.