Faghri Zonooz, Neda, and Mojtaba Salouti. “Biological Synthesis of Gold Nanoparticles by Cell Free Supernatant of Streptomyces Sp. ERI-3”. Asian Journal of Chemistry, vol. 24, no. 10, May 2012, pp. 4647-9, https://asianpubs.org/index.php/ajchem/article/view/9717.