Wong, B.C.F., et al. “Preparation and Characterization of Polymer Electrolyte Based on Glycidyl Methacrylate and 1-Butyl-3-Methylimidazolium bis(Trifluoromethylsulfonyl)imide by in Situ Photopolymerization”. Asian Journal of Chemistry, vol. 26, no. 27, Dec. 2014, pp. 262-6, doi:10.14233/ajchem.2014.19061.