PTAK, M. Incentives to promote the development of renewable energy in Poland. Economic and Environmental Studies, [S. l.], v. 14, n. 4 (32), p. 427–439, 2020. Disponível em: https://czasopisma.uni.opole.pl/index.php/ees/article/view/2914. Acesso em: 5 nov. 2024.