Tuan, Le Ngoc, and Pham Ngoc Chau. “OPTIMIZATION OF THE EFFICACY OF SLUDGE ULTRASONIC PRETREATMENT: A REVIEW”. Vietnam Journal of Science and Technology 52, no. 3 (July 2, 2014): 373–388. Accessed April 24, 2024. https://vjs.ac.vn/index.php/jst/article/view/2961.