S, Sumathi, Sethuprakash V, W J Basirun, and I Zainol. 2015. “Proton Conductivity and FTIR Studies of Methanesulfonic Acid (MSA) Incorporated Polyacrylamide Based Composite Solid Polymer Electrolyte”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 22 (1): 303-14. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/3821.