TUAN, Le Ngoc; CHÂU, Phạm Ngọc. An Executive Review of Sludge Pretreatment Techniques. <b>Vietnam Journal of Science and Technology</b>, Hanoi, VN, v. 52, n. 1, p. 1–34, 2014. DOI: 10.15625/0866-708X/52/1/2962. Disponível em: https://vjs.ac.vn/jst/article/view/2962. Acesso em: 10 jan. 2026.