Jalil, M.N., H.M. Zaki, R.A.W. Dryfe, and M.W. Anderson. 2011. “Porosity Study of Hybrid Silica Mesostructure in Aluminium Oxide Membrane Columnar by Cyclic Voltammetry Method”. Journal of Science and Technology 3 (2). https://journal.uthm.edu.my/index.php/JST/article/view/354.