YASSIN SHEHAB, A. Effect of Ultrasonic Waves on Sedimentation Characteristics and sludge Dewaterability. Al-Rafidain Engineering Journal (AREJ), [S. l.], v. 19, n. 6, p. 30–39, 2011. DOI: 10.33899/rengj.2011.26569. Disponível em: https://edusj.uomosul.edu.iq/index.php/arej/article/view/31173. Acesso em: 10 sep. 2025.