Sirelkhatim, A., S. Mahmud, A. Seeni, N. H. M. Kaus, L. C. Ann, S. K. M. Bakhori, H. Hasan, and D. Mohamad. “Review on Zinc Oxide Nanoparticles: Antibacterial Activity and Toxicity Mechanism”. Nano-Micro Letters, vol. 7, no. 3, Apr. 2015, pp. 219-42, doi:10.1007/s40820-015-0040-x.