Trakarnpruk, W, and W Kanjina. 2013. “SiO<sub>2</Sub>-Included Cesium Polyoxotungstate Catalysts for Oxidation”. Journal of Metals, Materials and Minerals 23 (2). Bangkok, Thailand. http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/73.