RUNGRODNIMITCHAI, S.; PHOKHANUSAI, W.; SUNGKHAHO, N. . Preparation of silica gel from rice husk ash using microwave heating. Journal of Metals, Materials and Minerals, Bangkok, Thailand, v. 19, n. 2, 2017. Disponível em: https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/235. Acesso em: 29 apr. 2024.