S. J. Sekewael, K. Wijaya, Triyono, and A. Budiman, “Microwave Assisted Preparation and Physico-Chemical Properties of Mixed Oxides Silica-Zirconia Montmorillonite K10 Nanocomposite”, ajc, vol. 28, no. 10, pp. 2325–2330, Jun. 2016.