ESSIEN, R. E.; OLANIYI, O. A.; ADAMS, L. A.; SHAIBU, R. O. Highly porous silica network prepared from sodium metasilicate. Journal of Metals, Materials and Minerals, Bangkok, Thailand, v. 21, n. 2, 2011. Disponível em: http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/180. Acesso em: 6 dec. 2021.