Phung, Lan Huong, Trung Kien Tran, The Cuong Nguyen, Hong Quang Do, Thu Tra Phan, Hong Son Vu, and Tien Huy Nguyen. “Optimization Research into the Ultrasonic-Assisted Extraction to Separate Polyphenol from Green Tea Waste”. ASEAN Journal of Chemical Engineering 12, no. 2 (December 31, 2012): 52-60. Accessed July 17, 2024. https://journal.ugm.ac.id/v3/AJChE/article/view/8132.