PHOWAN, N. Methane production from the effluent of bio-hydrogen fermentation process by anaerobic sludge using statistical method. Journal of Advanced Development in Engineering and Science, Babgkok, Thailand, v. 2, n. 4, p. 21–30, 2023. Disponível em: https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/778. Acesso em: 21 feb. 2024.