BARTNICZAK, B. State aid for biofuels in Poland. Economic and Environmental Studies, [S. l.], v. 14, n. 4 (32), p. 441–452, 2020. Disponível em: https://czasopisma.uni.opole.pl/index.php/ees/article/view/2917. Acesso em: 6 lis. 2024.