PURWOKO, Purwoko; ROMLI, Muhammad; SUPRIHATIN, Suprihatin; HADITJAROKO, Liesbetini. Alkaline Pretreatment of Sorghum Stalk and Co-Digestion with Sludge for Biogas Production. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 24, n. 1, p. 15–23, 2015. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/4357. Acesso em: 2 feb. 2026.