Syaichurrozi, I., Sarto, S., Sediawan, W. B., Hidayat, M. “Effect of Fe Addition on Anaerobic Digestion Process in Treating Vinasse: Experimental and Kinetic Studies”, Periodica Polytechnica Chemical Engineering, 67(1), pp. 127–140, 2023. https://doi.org/10.3311/PPch.20611