Joseph, C. G., Y. H. T. Yao, and V. Khrisnan. “Ultrasonic Assisted Photolytic Degradation of Reactive Black 5 (RB5) Simulated Wastewater”. ASEAN Journal of Chemical Engineering, Vol. 17, no. 2, Dec. 2017, pp. 37-50, https://jurnal.ugm.ac.id/v3/AJChE/article/view/8980.