Zhao, X.M., and M.J. Malik. “Electrochemical Fabrication of Graphite Oxide Nanosheets With Stable Photoluminescence and Their Photocatalytic Performance in Visible Light”. Asian Journal of Chemistry, vol. 25, no. 12, June 2013, pp. 6877-80, doi:10.14233/ajchem.2013.15050.