KEMPA, F. Classification of Methods to Reduce the Carbon Footprint. GeoScience Engineering, [S. l.], v. 69, n. 1, p. 37–45, 2023. DOI: 10.35180/gse-2023-0087. Disponível em: https://geoscience.cz/ojs/index.php/GSE/article/view/409. Acesso em: 21 may. 2026.