Trianda, Yenni, Reni Desmiarti, Tomonari Fujisawa, Yasushi Ishiguro, and Fusheng Li. 2018. “Study of Suspended Impurities Origin and Composition in the Treatment Process of Johkasou System”. ASEAN Journal of Chemical Engineering 18 (2), 54-61. https://jurnal.ugm.ac.id/v3/AJChE/article/view/9024.