Tuan, Le Ngoc, and Pham Ngoc Chau. “OPTIMIZATION OF THE EFFICACY OF SLUDGE ULTRASONIC PRETREATMENT: A REVIEW”. <i>Vietnam Journal of Science and Technology</i> 52, no. 3 (July 2, 2014): 373–388. Accessed March 19, 2026. https://cip.vast.vn/jst/article/view/2961.