Nguyen Dinh Tung, Nguyen Van Tien, and Nguyen Dinh Quy. “RESEARCHING, DESIGNING AND MANUFACTURING BIOFILTER”. UTEHY Journal of Science and Technology 35 (September 30, 2022): 90-95. Accessed May 2, 2024. http://jst.utehy.edu.vn/index.php/jst/article/view/562.