Hwi Cho, Bum, and Weon Bae Ko. “Preparation of ZrO2-C60 Nanocomposites Using Heat Treatment and Photocatalytic Degradation of Organic Dyes”. Asian Journal of Chemistry, vol. 25, no. 8, Mar. 2013, pp. 4577-82, doi:10.14233/ajchem.2013.14203.