B. Malabadi, R., N. T. Meti, G. S. Mulgund, K. Nataraja, and S. V. Kumar. “Synthesis of Silver Nanoparticles from in Vitro Derived Plants and Callus Cultures of Costus Speciosus (Koen.); Assessment of Antibacterial Activity”. Research in Plant Biology, vol. 2, no. 4, Aug. 2012, https://www.updatepublishing.com/journal/index.php/ripb/article/view/2536.