ABOU RIDA, M.; HARB, F. Synthesis and characterization of amorphous silica nanoparitcles from aqueous silicates uisng cationic surfactants. Journal of Metals, Materials and Minerals, Bangkok, Thailand, v. 24, n. 1, 2014. Disponível em: http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/108. Acesso em: 1 dec. 2021.