Prasad, Majeti Narasimha Vara, and Helena Maria de Oliveira Freitas. 2003. “Metal Hyperaccumulation in Plants - Biodiversity Prospecting for Phytoremediation Technology”. Electronic Journal of Biotechnology 6 (3). Valparaíso, Chile:0-0. https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v6n3-6.