Arshad, M., Azam, A., S. Ahmed, A., Mollah, S., & H. Naqvi, A. (2011). Tailoring of Structural and Optical Properties of ZnO Nanoparticles by Co Doping. Asian Journal of Chemistry, 23(12), 5577–5580. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/11122