Joseph, Collin G, Yun Hin Taufiq Yao, and Vigneswar Khrisnan. 2017. “Ultrasonic Assisted Photolytic Degradation of Reactive Black 5 (RB5) Simulated Wastewater”. ASEAN Journal of Chemical Engineering 17 (2), 37-50. https://journal.ugm.ac.id/v3/AJChE/article/view/8980.