CZOPKA, P. Sustainable materials in ecological buildings. Economic and Environmental Studies, [S. l.], v. 18, n. 1 (45), p. 93–102, 2020. DOI: 10.25167/ees.2018.45.6. Disponível em: https://czasopisma.uni.opole.pl/index.php/ees/article/view/2577. Acesso em: 17 nov. 2024.