BIOGAS AS AN ENERGY SOURCE FOR INTERNAL COMBUSTION ENGINES: A REVIEW. HOLOS, [S. l.], v. 7, p. 1–14, 2020. DOI: 10.15628/holos.2020.10129. Disponível em: https://periodicos-treinamento.ifrn.edu.br/index.php/HOLOS/article/view/10129. Acesso em: 26 out. 2026.