Scaling Multi Substrate Biogas Systems for National Energy Security and Circular Economy Transition in Sri Lanka: A Case Study. International Journal of Sustainability and Multidisciplinary Research, [S. l.], v. 1, n. 3, p. 32–56, 2025. DOI: 10.71214/jsmr.01.03.03. Disponível em: https://ijsmr.com/SSDRFJournal/article/view/13. Acesso em: 1 jan. 2026.