K. Suranjit Prasad, Pathak, D., Patel, A., Dalwadi, P., Prasad, R., Patel, P., and Selvaraj, K., ?Biogenic synthesis of silver nanoparticles using nicotiana tobaccum leaf extract and study of their antibacterial effect?, African Journal of Biotechnology, vol. 10, no. 41, pp. 8122-8130, 2011.