Hartati, E. ., N. . Aiman Musodiqoh, E. . Nurlina, and D. . Agustian Permadi. “Effect of Hyphomicrobium Sp. in Biogas Formation from Organic Waste Treated by Batch Mode Anaerobic Digestion: DOI: 10.32526/Ennrj.18.3.2020.24”. Environment and Natural Resources Journal, vol. 18, no. 3, Apr. 2020, pp. 257-6, https://ph02.tci-thaijo.org/index.php/ennrj/article/view/240473.