Chowdhury, F. R., S. Choudhury, F. Hasan, and T. Begum. “Optical Properties of Undoped and Indium-Doped Tin Oxide Thin Films”. Journal of Bangladesh Academy of Sciences, vol. 35, no. 1, July 2011, pp. 99-111, doi:10.3329/jbas.v35i1.7975.