TAMBUNAN, O. R.; MOHADI, R. Preparation of polyoxometalate compound (NH4)6(β-P2W18O62)/SiO2 by sol-gel method and its characterization. Science and Technology Indonesia, [S. l.], v. 2, n. 1, p. 1–8, 2017. DOI: 10.26554/sti.2017.2.1.1-8. Disponível em: https://sciencetechindonesia.com/index.php/jsti/article/view/8. Acesso em: 15 apr. 2026.