Antunes, W. M., A. S. Luna, C. A. Henriques, and A. C. A. da Costa. “An Evaluation of Copper Biosorption by a Brown Seaweed under Optimized Conditions”. Electronic Journal of Biotechnology, vol. 6, no. 3, Dec. 2003, pp. 0-0, https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v6n3-5.