HANG, Nga Nguyen Thi. Removal of Suspended Clay Particles in Water by Weathered Volcanic Ash-Based Material. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 35, n. 1, p. 58–66, 2017. Disponível em: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/3262. Acesso em: 17 sep. 2025.