Palapa, Neza Rahayu, and Muhammad Said. “Keggin Type Polyoxometalate H4[αSiW12O40].NH2O As Intercalant for Hydrotalcite”. Science and Technology Indonesia 1, no. 1 (June 21, 2017): 25–28. Accessed May 25, 2026. https://www.sciencetechindonesia.com/index.php/jsti/article/view/7.