WAŁOWSKI, Grzegorz. Development of biogas and biorafinery systems in Polish rural communities. Journal of Water and Land Development, [S. l.], v. 49, n. 49, p. 156–168, 2021. DOI: 10.24425/jwld.2021.137108. Disponível em: https://wydawnictwo.pan.pl/index.php/jwld/article/view/4569. Acesso em: 19 oct. 2026.